diff --git a/src/main/java/org/springframework/samples/petclinic/repository/OwnerRepositoryExt.java b/src/main/java/org/springframework/samples/petclinic/repository/OwnerRepositoryExt.java
new file mode 100644
index 000000000..f2a93b460
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/repository/OwnerRepositoryExt.java
@@ -0,0 +1,15 @@
+package org.springframework.samples.petclinic.repository;
+
+import java.util.Collection;
+
+import org.springframework.dao.DataAccessException;
+import org.springframework.samples.petclinic.model.Owner;
+
+public interface OwnerRepositoryExt extends OwnerRepository {
+	
+	Collection<Owner> findAll() throws DataAccessException;
+
+	void delete(Owner owner) throws DataAccessException;
+
+
+}
diff --git a/src/main/java/org/springframework/samples/petclinic/repository/PetRepositoryExt.java b/src/main/java/org/springframework/samples/petclinic/repository/PetRepositoryExt.java
new file mode 100644
index 000000000..90a3508d4
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/repository/PetRepositoryExt.java
@@ -0,0 +1,14 @@
+package org.springframework.samples.petclinic.repository;
+
+import java.util.Collection;
+
+import org.springframework.dao.DataAccessException;
+import org.springframework.samples.petclinic.model.Pet;
+
+public interface PetRepositoryExt extends PetRepository {
+	
+	Collection<Pet> findAll() throws DataAccessException;
+
+	void delete(Pet pet) throws DataAccessException;
+
+}
diff --git a/src/main/java/org/springframework/samples/petclinic/repository/PetTypeRepositoryExt.java b/src/main/java/org/springframework/samples/petclinic/repository/PetTypeRepositoryExt.java
new file mode 100644
index 000000000..c715e0917
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/repository/PetTypeRepositoryExt.java
@@ -0,0 +1,18 @@
+package org.springframework.samples.petclinic.repository;
+
+import java.util.Collection;
+
+import org.springframework.dao.DataAccessException;
+import org.springframework.samples.petclinic.model.PetType;
+
+public interface PetTypeRepositoryExt {
+	
+	PetType findById(int id);
+	
+	Collection<PetType> findAll() throws DataAccessException;
+
+	void save(PetType petType) throws DataAccessException;
+	
+	void delete(PetType petType) throws DataAccessException;
+
+}
diff --git a/src/main/java/org/springframework/samples/petclinic/repository/SpecialtyRepositoryExt.java b/src/main/java/org/springframework/samples/petclinic/repository/SpecialtyRepositoryExt.java
new file mode 100644
index 000000000..c122a57ba
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/repository/SpecialtyRepositoryExt.java
@@ -0,0 +1,18 @@
+package org.springframework.samples.petclinic.repository;
+
+import java.util.Collection;
+
+import org.springframework.dao.DataAccessException;
+import org.springframework.samples.petclinic.model.Specialty;
+
+public interface SpecialtyRepositoryExt {
+	
+	Specialty findById(int id);
+	
+	Collection<Specialty> findAll() throws DataAccessException;
+	
+	void save(Specialty specialty) throws DataAccessException;
+	
+	void delete(Specialty specialty) throws DataAccessException;
+
+}
diff --git a/src/main/java/org/springframework/samples/petclinic/repository/VetRepositoryExt.java b/src/main/java/org/springframework/samples/petclinic/repository/VetRepositoryExt.java
new file mode 100644
index 000000000..d52778493
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/repository/VetRepositoryExt.java
@@ -0,0 +1,18 @@
+package org.springframework.samples.petclinic.repository;
+
+import java.util.Collection;
+
+import org.springframework.dao.DataAccessException;
+import org.springframework.samples.petclinic.model.Vet;
+
+public interface VetRepositoryExt extends VetRepository {
+	
+	Vet findById(int id) throws DataAccessException;
+
+	Collection<Vet> findAll() throws DataAccessException;
+	
+	void save(Vet vet) throws DataAccessException;
+	
+	void delete(Vet vet) throws DataAccessException;
+
+}
diff --git a/src/main/java/org/springframework/samples/petclinic/repository/VisitRepositoryExt.java b/src/main/java/org/springframework/samples/petclinic/repository/VisitRepositoryExt.java
new file mode 100644
index 000000000..ecc9a6556
--- /dev/null
+++ b/src/main/java/org/springframework/samples/petclinic/repository/VisitRepositoryExt.java
@@ -0,0 +1,16 @@
+package org.springframework.samples.petclinic.repository;
+
+import java.util.Collection;
+
+import org.springframework.dao.DataAccessException;
+import org.springframework.samples.petclinic.model.Visit;
+
+public interface VisitRepositoryExt extends VisitRepository {
+	
+	Visit findById(int id) throws DataAccessException;
+	
+	Collection<Visit> findAll() throws DataAccessException;
+
+	void delete(Visit visit) throws DataAccessException;
+
+}