diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/HorseEndpoint.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/HorseEndpoint.java
index 324ec94..7f3f71e 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/HorseEndpoint.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/HorseEndpoint.java
@@ -4,12 +4,12 @@ import at.ac.tuwien.sepm.assignment.individual.endpoint.dto.HorseDto;
 import at.ac.tuwien.sepm.assignment.individual.endpoint.mapper.HorseMapper;
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.service.HorseService;
 import at.ac.tuwien.sepm.assignment.individual.util.ValidationException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.dao.DataAccessException;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.*;
@@ -77,7 +77,7 @@ public class HorseEndpoint {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST,
                 "Error during adding new horse: " + e.getMessage());
-        } catch (DataAccessException e) {
+        } catch (PersistenceException e) {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY,
                 "Something went wrong during the communication with the database");
@@ -96,7 +96,7 @@ public class HorseEndpoint {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST,
                 "Error during updating horse with id " + id + ": " + e.getMessage());
-        } catch (DataAccessException e) {
+        } catch (PersistenceException e) {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY,
                 "Something went wrong during the communication with the database");
@@ -117,7 +117,7 @@ public class HorseEndpoint {
         LOGGER.info("DELETE " + BASE_URL + "/{}", id);
         try {
             horseService.deleteHorse(id);
-        } catch (DataAccessException e) {
+        } catch (PersistenceException e) {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY,
                 "Something went wrong during the communication with the database");
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/OwnerEndpoint.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/OwnerEndpoint.java
index 0e6678f..749976f 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/OwnerEndpoint.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/endpoint/OwnerEndpoint.java
@@ -6,6 +6,7 @@ import at.ac.tuwien.sepm.assignment.individual.endpoint.mapper.HorseMapper;
 import at.ac.tuwien.sepm.assignment.individual.endpoint.mapper.OwnerMapper;
 import at.ac.tuwien.sepm.assignment.individual.entity.Owner;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.service.OwnerService;
 
 import java.lang.invoke.MethodHandles;
@@ -16,7 +17,6 @@ import at.ac.tuwien.sepm.assignment.individual.util.ValidationException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.dao.DataAccessException;
 import org.springframework.dao.DataIntegrityViolationException;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
@@ -92,7 +92,7 @@ public class OwnerEndpoint {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST,
                 "Error during adding new owner: " + e.getMessage());
-        } catch (DataAccessException e) {
+        } catch (PersistenceException e) {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY,
                 "Something went wrong during the communication with the database");
@@ -111,7 +111,7 @@ public class OwnerEndpoint {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.BAD_REQUEST,
                 "Error during updating owner with id " + id + ": " + e.getMessage());
-        } catch (DataAccessException e) {
+        } catch (PersistenceException e) {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY,
                 "Something went wrong during the communication with the database");
@@ -132,7 +132,7 @@ public class OwnerEndpoint {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.FORBIDDEN,
                 "The requested owner cannot be deleted because there are horses that are assigned to him/her");
-        }catch (DataAccessException e) {
+        }catch (PersistenceException e) {
             LOGGER.error(e.getMessage());
             throw new ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY,
                 "Something went wrong during the communication with the database");
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/exception/PersistenceException.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/exception/PersistenceException.java
new file mode 100644
index 0000000..ebba923
--- /dev/null
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/exception/PersistenceException.java
@@ -0,0 +1,13 @@
+package at.ac.tuwien.sepm.assignment.individual.exception;
+
+
+public class PersistenceException extends RuntimeException {
+
+    public PersistenceException(String message) {
+        super(message);
+    }
+
+    public PersistenceException(String message, Exception e) {
+        super(message, e);
+    }
+}
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/HorseDao.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/HorseDao.java
index d52787f..ae234d9 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/HorseDao.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/HorseDao.java
@@ -2,7 +2,7 @@ package at.ac.tuwien.sepm.assignment.individual.persistence;
 
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
-import org.springframework.dao.DataAccessException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 
 import java.io.IOException;
 import java.util.List;
@@ -13,46 +13,46 @@ public interface HorseDao {
     /**
      * @param id of the horse to find.
      * @return the horse with the specified id.
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
      * @throws NotFoundException   will be thrown if the horse could not be found in the database.
      */
-    Horse findOneById(Long id);
+    Horse findOneById(Long id) throws NotFoundException, PersistenceException;
 
     /**
      * @return a list of all horses in the system
      * @throws NotFoundException   will be thrown if no horses are present in the database
-     * @throws DataAccessException will be thrown if something goes wrong during the database access
+     * @throws PersistenceException will be thrown if something goes wrong during the database access
      */
-    List<Horse> getAll() throws NotFoundException;
+    List<Horse> getAll() throws NotFoundException, PersistenceException;
 
     /**
      * @param filters to use for filtering the horses
      * @return a list of all horses that fill the criteria
      * @throws NotFoundException wil be thrown if no horses fill the criteria
-     * @throws DataAccessException will be thrown if something goes wrong during the database access
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
      */
-    List<Horse> getFiltered(Map<String, String> filters) throws NotFoundException;
+    List<Horse> getFiltered(Map<String, String> filters) throws NotFoundException, PersistenceException;
 
     /**
      * @param horse that specifies the horse to add
      * @return the newly created horse
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
      */
-    Horse addHorse(Horse horse);
+    Horse addHorse(Horse horse) throws PersistenceException;
 
     /**
      * @param horse that specifies the new horse values alongside with the id of the horse to update
      * @return the updated horse
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
-     * @throws IOException         will be thrown if the old horse image could not be deleted
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
+     * @throws IOException          will be thrown if the old horse image could not be deleted
      */
-    Horse updateHorse(Horse horse) throws DataAccessException, IOException;
+    Horse updateHorse(Horse horse) throws PersistenceException, IOException;
 
     /**
      * @param id of the horse to delete
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
-     * @throws NotFoundException   will be thrown if the horse could not be found in the database.
-     * @throws IOException         will be thrown if the horse image could not be deleted
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
+     * @throws NotFoundException    will be thrown if the horse could not be found in the database.
+     * @throws IOException          will be thrown if the horse image could not be deleted
      */
-    void deleteHorse(Long id) throws DataAccessException, NotFoundException, IOException;
+    void deleteHorse(Long id) throws PersistenceException, NotFoundException, IOException;
 }
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/OwnerDao.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/OwnerDao.java
index 11b00dd..06fc583 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/OwnerDao.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/OwnerDao.java
@@ -3,7 +3,7 @@ package at.ac.tuwien.sepm.assignment.individual.persistence;
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.entity.Owner;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
-import org.springframework.dao.DataAccessException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 
 import java.util.List;
 import java.util.Map;
@@ -13,15 +13,13 @@ public interface OwnerDao {
     /**
      * @param id of the owner to find.
      * @return the owner with the specified id.
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
-     * @throws NotFoundException   will be thrown if the owner could not be found in the database.
+     * @throws NotFoundException will be thrown if the owner could not be found in the database.
      */
-    Owner findOneById(Long id);
+    Owner findOneById(Long id) throws NotFoundException;
 
     /**
      * @return a list of all owners in the system
      * @throws NotFoundException   will be thrown if no owners are present in the database
-     * @throws DataAccessException will be thrown if something goes wrong during the database access
      */
     List<Owner> getAll() throws NotFoundException;
 
@@ -29,7 +27,6 @@ public interface OwnerDao {
      * @param filters to use for filtering the owners
      * @return a list of all owners that fill the criteria
      * @throws NotFoundException wil be thrown if no owners fill the criteria
-     * @throws DataAccessException will be thrown if something goes wrong during the database access
      */
     List<Owner> getFiltered(Map<String, String> filters) throws NotFoundException;
 
@@ -37,28 +34,28 @@ public interface OwnerDao {
      * @param id of the owner whose horses the database should obtain
      * @return a list of all horses that the specified owner owns
      * @throws NotFoundException will be thrown if the owner owns no horses or if the owner could not be found
-     * @throws DataAccessException will be thrown if something goes wrong during the database access
      */
     List<Horse> getOwnedHorses(Long id) throws NotFoundException;
 
     /**
      * @param owner that specifies the owner to add
      * @return the newly created owner
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
      */
-    Owner addOwner(Owner owner);
+    Owner addOwner(Owner owner) throws PersistenceException;
 
     /**
      * @param owner that specifies the new owner values alongside with the id of the owner to update
      * @return the updated owner
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
+     * @throws NotFoundException wil be thrown if no owners fill the criteria
      */
-    Owner updateOwner(Owner owner) throws DataAccessException;
+    Owner updateOwner(Owner owner) throws PersistenceException, NotFoundException;
 
     /**
      * @param id of the owner to delete
-     * @throws DataAccessException will be thrown if something goes wrong during the database access.
-     * @throws NotFoundException   will be thrown if the owner could not be found in the database.
+     * @throws PersistenceException will be thrown if something goes wrong during the database access.
+     * @throws NotFoundException    will be thrown if the owner could not be found in the database.
      */
-    void deleteOwner(Long id) throws DataAccessException, NotFoundException;
+    void deleteOwner(Long id) throws PersistenceException, NotFoundException;
 }
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/HorseJdbcDao.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/HorseJdbcDao.java
index 4b468ee..5c40f46 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/HorseJdbcDao.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/HorseJdbcDao.java
@@ -3,6 +3,7 @@ package at.ac.tuwien.sepm.assignment.individual.persistence.impl;
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.enums.ERace;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.persistence.FileDao;
 import at.ac.tuwien.sepm.assignment.individual.persistence.HorseDao;
 import org.slf4j.Logger;
@@ -149,14 +150,13 @@ public class HorseJdbcDao implements HorseDao {
             }, keyHolder);
 
             if (changes == 0)
-                throw new DataAccessException("Creating horse failed, no rows affected") {};
+                throw new PersistenceException("Creating horse failed, no rows affected");
 
             horse.setId(((Number)keyHolder.getKeys().get("id")).longValue());
             return horse;
 
         } catch (DataAccessException e) {
-            // We are doing this in order to not change the exception type
-            throw new DataAccessException("Adding new records failed", e) {};
+            throw new PersistenceException("Adding new records failed", e);
         }
     }
 
@@ -197,7 +197,7 @@ public class HorseJdbcDao implements HorseDao {
             });
 
             if (changes == 0)
-                throw new DataAccessException("Updating horse failed, no rows affected") {};
+                throw new PersistenceException("Updating horse failed, no rows affected");
 
             horse.setCreatedAt(oldHorse.getCreatedAt());
 
@@ -206,8 +206,7 @@ public class HorseJdbcDao implements HorseDao {
             return horse;
 
         } catch (DataAccessException e) {
-            // We are doing this in order to not change the exception type
-            throw new DataAccessException("Updating records failed", e) {};
+            throw new PersistenceException("Updating records failed", e);
         }
     }
 
@@ -225,12 +224,11 @@ public class HorseJdbcDao implements HorseDao {
             });
 
             if (changes == 0)
-                throw new DataAccessException("Deleting horse failed, no rows affected") {};
+                throw new PersistenceException("Deleting horse failed, no rows affected");
 
             fileDao.delete(horseToDelete.getImagePath());
         } catch(DataAccessException e){
-            // We are doing this in order to not change the exception type
-            throw new DataAccessException("Deleting records failed", e) {};
+            throw new PersistenceException("Deleting records failed", e);
         }
     }
 
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/OwnerJdbcDao.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/OwnerJdbcDao.java
index 4564edc..14d41d5 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/OwnerJdbcDao.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/persistence/impl/OwnerJdbcDao.java
@@ -3,6 +3,7 @@ package at.ac.tuwien.sepm.assignment.individual.persistence.impl;
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.entity.Owner;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.persistence.OwnerDao;
 
 import java.lang.invoke.MethodHandles;
@@ -133,15 +134,14 @@ public class OwnerJdbcDao implements OwnerDao {
             }, keyHolder);
 
             if (changes == 0)
-                throw new DataAccessException("Creating owner failed, no rows affected") {};
+                throw new PersistenceException("Creating owner failed, no rows affected");
 
             owner.setId(((Number)keyHolder.getKeys().get("id")).longValue());
 
             return owner;
 
         } catch (DataAccessException e) {
-            // We are doing this in order to not change the exception type
-            throw new DataAccessException("Adding new records failed", e) {};
+            throw new PersistenceException("Adding new records failed", e);
         }
     }
 
@@ -172,14 +172,13 @@ public class OwnerJdbcDao implements OwnerDao {
             });
 
             if (changes == 0)
-                throw new DataAccessException("Updating owner failed, no rows affected") {};
+                throw new PersistenceException("Updating owner failed, no rows affected");
 
             owner.setCreatedAt(oldOwner.getCreatedAt());
 
             return owner;
         } catch(DataAccessException e) {
-            // We are doing this in order to not change the exception type
-            throw new DataAccessException("Updating records failed", e) {};
+            throw new PersistenceException("Updating records failed", e);
         }
     }
 
@@ -200,11 +199,10 @@ public class OwnerJdbcDao implements OwnerDao {
             });
 
             if (changes == 0)
-                throw new DataAccessException("Deleting owner failed, no rows affected") {};
+                throw new PersistenceException("Deleting owner failed, no rows affected");
 
         } catch(DataAccessException e){
-            // We are doing this in order to not change the exception type
-            throw new DataAccessException("Deleting records failed", e) {};
+            throw new PersistenceException("Deleting records failed", e);
         }
     }
 
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/HorseService.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/HorseService.java
index 00562bb..946202d 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/HorseService.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/HorseService.java
@@ -2,8 +2,8 @@ package at.ac.tuwien.sepm.assignment.individual.service;
 
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.util.ValidationException;
-import org.springframework.dao.DataAccessException;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
@@ -37,7 +37,7 @@ public interface HorseService {
      * @param horse to add.
      * @return the new horse.
      * @throws ValidationException will be thrown if something goes wrong during verification.
-     * @throws DataAccessException will be thrown if the horse could not be saved in the database.
+     * @throws PersistenceException will be thrown if the horse could not be saved in the database.
      */
     Horse addHorse(Horse horse);
 
@@ -45,18 +45,18 @@ public interface HorseService {
      * @param horse that specifies the new horse values alongside with the id of the horse to update
      * @return the updated horse
      * @throws ValidationException will be thrown if something goes wrong during verification.
-     * @throws DataAccessException will be thrown if the horse could not be saved in the database.
+     * @throws PersistenceException will be thrown if the horse could not be saved in the database.
      * @throws IOException         will be thrown if the old horse image could not be deleted
      */
-    Horse updateHorse(Horse horse) throws ValidationException, DataAccessException, IOException;
+    Horse updateHorse(Horse horse) throws ValidationException, PersistenceException, IOException;
 
     /**
      * @param id of the horse to delete
      * @throws NotFoundException   will be thrown if the horse could not be found in the system
-     * @throws DataAccessException will be thrown if the horse could not be deleted from the database
+     * @throws PersistenceException will be thrown if the horse could not be deleted from the database
      * @throws IOException         will be thrown if the horse image could not be deleted
      */
-    void deleteHorse(Long id) throws NotFoundException, DataAccessException, IOException;
+    void deleteHorse(Long id) throws NotFoundException, PersistenceException, IOException;
 
     /**
      * @param img image to upload
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/OwnerService.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/OwnerService.java
index 112817e..1568c5e 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/OwnerService.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/OwnerService.java
@@ -3,8 +3,8 @@ package at.ac.tuwien.sepm.assignment.individual.service;
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.entity.Owner;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.util.ValidationException;
-import org.springframework.dao.DataAccessException;
 
 import java.util.List;
 import java.util.Map;
@@ -38,7 +38,7 @@ public interface OwnerService {
      * @param id of the owner whose horses the database should obtain
      * @return a list of all horses that the specified owner owns
      * @throws NotFoundException will be thrown if the owner owns no horses or if the owner could not be found
-     * @throws DataAccessException will be thrown if something goes wrong during the database access
+     * @throws PersistenceException will be thrown if something goes wrong during the database access
      */
     List<Horse> getOwnedHorses(Long id) throws NotFoundException;
 
@@ -46,22 +46,22 @@ public interface OwnerService {
      * @param owner to create
      * @return the new owner
      * @throws ValidationException will be thrown if something goes wrong during verification.
-     * @throws DataAccessException will be thrown if the owner could not be saved in the database.
+     * @throws PersistenceException will be thrown if the owner could not be saved in the database.
      */
-    Owner addOwner(Owner owner) throws ValidationException, DataAccessException;
+    Owner addOwner(Owner owner) throws ValidationException, PersistenceException;
 
     /**
      * @param owner that specifies the new owner values alongside with the id of the owner to update
      * @return the updated owner
      * @throws ValidationException will be thrown if something goes wrong during verification.
-     * @throws DataAccessException will be thrown if the owner could not be saved in the database.
+     * @throws PersistenceException will be thrown if the owner could not be saved in the database.
      */
-    Owner updateOwner(Owner owner) throws ValidationException, DataAccessException;
+    Owner updateOwner(Owner owner) throws ValidationException, PersistenceException;
 
     /**
      * @param id of the owner to delete
      * @throws NotFoundException   will be thrown if the owner could not be found in the system
-     * @throws DataAccessException will be thrown if the owner could not be deleted from the database
+     * @throws PersistenceException will be thrown if the owner could not be deleted from the database
      */
-    void deleteOwner(Long id) throws NotFoundException, DataAccessException;
+    void deleteOwner(Long id) throws NotFoundException, PersistenceException;
 }
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleHorseService.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleHorseService.java
index 39c8274..8a3d82b 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleHorseService.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleHorseService.java
@@ -2,6 +2,7 @@ package at.ac.tuwien.sepm.assignment.individual.service.impl;
 
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.persistence.FileDao;
 import at.ac.tuwien.sepm.assignment.individual.persistence.HorseDao;
 import at.ac.tuwien.sepm.assignment.individual.service.HorseService;
@@ -10,7 +11,6 @@ import at.ac.tuwien.sepm.assignment.individual.util.Validator;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.dao.DataAccessException;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 
@@ -53,21 +53,21 @@ public class SimpleHorseService implements HorseService {
     }
 
     @Override
-    public Horse addHorse(Horse horse) throws ValidationException, DataAccessException {
+    public Horse addHorse(Horse horse) throws ValidationException, PersistenceException {
         this.validator.validateNewHorse(horse);
         LOGGER.debug("addHorse({})", horse.toString());
         return horseJdbcDao.addHorse(horse);
     }
 
     @Override
-    public Horse updateHorse(Horse horse) throws ValidationException, DataAccessException, IOException {
+    public Horse updateHorse(Horse horse) throws ValidationException, PersistenceException, IOException {
         this.validator.validateUpdateHorse(horse);
         LOGGER.debug("updateHorse({})", horse.toString());
         return horseJdbcDao.updateHorse(horse);
     }
 
     @Override
-    public void deleteHorse(Long id) throws NotFoundException, DataAccessException, IOException {
+    public void deleteHorse(Long id) throws NotFoundException, PersistenceException, IOException {
         LOGGER.debug("deleteHorse({})", id);
         horseJdbcDao.deleteHorse(id);
     }
diff --git a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleOwnerService.java b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleOwnerService.java
index 41f0926..a885e5d 100644
--- a/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleOwnerService.java
+++ b/backend/src/main/java/at/ac/tuwien/sepm/assignment/individual/service/impl/SimpleOwnerService.java
@@ -3,6 +3,7 @@ package at.ac.tuwien.sepm.assignment.individual.service.impl;
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.entity.Owner;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.persistence.OwnerDao;
 import at.ac.tuwien.sepm.assignment.individual.service.OwnerService;
 import at.ac.tuwien.sepm.assignment.individual.util.ValidationException;
@@ -15,7 +16,6 @@ import java.util.Map;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.dao.DataAccessException;
 import org.springframework.stereotype.Service;
 
 @Service
@@ -57,21 +57,21 @@ public class SimpleOwnerService implements OwnerService {
     }
 
     @Override
-    public Owner addOwner(Owner owner) throws ValidationException, DataAccessException {
+    public Owner addOwner(Owner owner) throws ValidationException, PersistenceException {
         LOGGER.debug("addOwner({})", owner);
         this.validator.validateNewOwner(owner);
         return ownerDao.addOwner(owner);
     }
 
     @Override
-    public Owner updateOwner(Owner owner) throws ValidationException, DataAccessException {
+    public Owner updateOwner(Owner owner) throws ValidationException, PersistenceException {
         LOGGER.debug("updateOwner({})", owner);
         this.validator.validateUpdateOwner(owner);
         return ownerDao.updateOwner(owner);
     }
 
     @Override
-    public void deleteOwner(Long id) throws NotFoundException, DataAccessException {
+    public void deleteOwner(Long id) throws NotFoundException, PersistenceException {
         LOGGER.debug("deleteOwner({})", id);
         ownerDao.deleteOwner(id);
     }
diff --git a/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/HorseDaoTestBase.java b/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/HorseDaoTestBase.java
index 40089a0..f44f9c9 100644
--- a/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/HorseDaoTestBase.java
+++ b/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/HorseDaoTestBase.java
@@ -5,11 +5,11 @@ import static org.junit.jupiter.api.Assertions.*;
 import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.enums.ERace;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.persistence.HorseDao;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.dao.DataAccessException;
 
 import java.io.IOException;
 import java.sql.Date;
@@ -81,10 +81,10 @@ public abstract class HorseDaoTestBase {
     }
 
     @Test
-    @DisplayName("Adding a new horse with the incorrect parameters should throw DataAccessException")
-    public void addingNewHorse_incorrectParameters_shouldThrowDataAccess() {
+    @DisplayName("Adding a new horse with the incorrect parameters should throw PersistenceException")
+    public void addingNewHorse_incorrectParameters_shouldThrowPersistence() {
         Horse newHorse = new Horse("Zephyr", "Nice horse", (short) 80, Date.valueOf("2020-01-01"), null, null, null);
-        assertThrows(DataAccessException.class, () -> horseDao.addHorse(newHorse));
+        assertThrows(PersistenceException.class, () -> horseDao.addHorse(newHorse));
     }
 
     @Test
@@ -117,8 +117,8 @@ public abstract class HorseDaoTestBase {
     }
 
     @Test
-    @DisplayName("Updating a horse with the incorrect parameters should throw DataAccessException")
-    public void updatingHorse_incorrectParameters_shouldThrowDataAccess() {
+    @DisplayName("Updating a horse with the incorrect parameters should throw PersistenceException")
+    public void updatingHorse_incorrectParameters_shouldThrowPersistence() {
         // Create horse
         Horse newHorse = new Horse("Zephyr", "Nice horse", (short) 4, Date.valueOf("2020-01-01"), ERace.APPALOOSA, "files/test.png", null);
         Horse savedHorse = horseDao.addHorse(newHorse);
@@ -132,7 +132,7 @@ public abstract class HorseDaoTestBase {
         newHorse.setRace(null);
         newHorse.setImagePath(null);
         newHorse.setOwner(null);
-        assertThrows(DataAccessException.class, () -> horseDao.updateHorse(newHorse));
+        assertThrows(PersistenceException.class, () -> horseDao.updateHorse(newHorse));
     }
 
     @Test
diff --git a/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/OwnerDaoTestBase.java b/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/OwnerDaoTestBase.java
index 520cb43..a5a3ddd 100644
--- a/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/OwnerDaoTestBase.java
+++ b/backend/src/test/java/at/ac/tuwien/sepm/assignment/individual/unit/persistence/OwnerDaoTestBase.java
@@ -6,12 +6,12 @@ import at.ac.tuwien.sepm.assignment.individual.entity.Horse;
 import at.ac.tuwien.sepm.assignment.individual.entity.Owner;
 import at.ac.tuwien.sepm.assignment.individual.enums.ERace;
 import at.ac.tuwien.sepm.assignment.individual.exception.NotFoundException;
+import at.ac.tuwien.sepm.assignment.individual.exception.PersistenceException;
 import at.ac.tuwien.sepm.assignment.individual.persistence.HorseDao;
 import at.ac.tuwien.sepm.assignment.individual.persistence.OwnerDao;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.dao.DataAccessException;
 import org.springframework.dao.DataIntegrityViolationException;
 
 import java.io.IOException;
@@ -108,10 +108,10 @@ public abstract class OwnerDaoTestBase {
     }
 
     @Test
-    @DisplayName("Adding a new owner with the incorrect parameters should throw DataAccessException")
-    public void addingNewOwner_incorrectParameters_shouldThrowDataAccess() {
+    @DisplayName("Adding a new owner with the incorrect parameters should throw PersistenceException")
+    public void addingNewOwner_incorrectParameters_shouldThrowPersistence() {
         Owner newOwner = new Owner("");
-        assertThrows(DataAccessException.class, () -> ownerDao.addOwner(newOwner));
+        assertThrows(PersistenceException.class, () -> ownerDao.addOwner(newOwner));
     }
 
     @Test
@@ -133,8 +133,8 @@ public abstract class OwnerDaoTestBase {
     }
 
     @Test
-    @DisplayName("Updating a owner with the incorrect parameters should throw DataAccessException")
-    public void updatingOwner_incorrectParameters_shouldThrowDataAccess() {
+    @DisplayName("Updating a owner with the incorrect parameters should throw PersistenceException")
+    public void updatingOwner_incorrectParameters_shouldThrowPersistence() {
         // Create owner
         Owner newOwner = new Owner("Chad");
         Owner savedOwner = ownerDao.addOwner(newOwner);
@@ -142,7 +142,7 @@ public abstract class OwnerDaoTestBase {
         // Update owner
         newOwner.setId(savedOwner.getId());
         newOwner.setName("");
-        assertThrows(DataAccessException.class, () -> ownerDao.updateOwner(newOwner));
+        assertThrows(PersistenceException.class, () -> ownerDao.updateOwner(newOwner));
     }
 
     @Test