diff --git a/spring-data-jpa/src/main/java/com/baeldung/domain/Item.java b/spring-data-jpa/src/main/java/com/baeldung/domain/Item.java
new file mode 100644
index 0000000000..97ce14d92d
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/domain/Item.java
@@ -0,0 +1,81 @@
+package com.baeldung.domain;
+
+import java.math.BigDecimal;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class Item {
+
+    private String color;
+    private String grade;
+
+    @Id
+    private Long id;
+
+    @ManyToOne
+    private ItemType itemType;
+
+    private String name;
+    private BigDecimal price;
+    @ManyToOne
+    private Store store;
+
+    public String getColor() {
+        return color;
+    }
+
+    public String getGrade() {
+        return grade;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public ItemType getItemType() {
+        return itemType;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public BigDecimal getPrice() {
+        return price;
+    }
+
+    public Store getStore() {
+        return store;
+    }
+
+    public void setColor(String color) {
+        this.color = color;
+    }
+
+    public void setGrade(String grade) {
+        this.grade = grade;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public void setItemType(ItemType itemType) {
+        this.itemType = itemType;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setPrice(BigDecimal price) {
+        this.price = price;
+    }
+
+    public void setStore(Store store) {
+        this.store = store;
+    }
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/domain/ItemType.java b/spring-data-jpa/src/main/java/com/baeldung/domain/ItemType.java
new file mode 100644
index 0000000000..412079c2ae
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/domain/ItemType.java
@@ -0,0 +1,46 @@
+package com.baeldung.domain;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToMany;
+
+@Entity
+public class ItemType {
+
+    @Id
+    private Long id;
+    @OneToMany(cascade = CascadeType.ALL)
+    @JoinColumn(name = "ITEM_TYPE_ID")
+    private List<Item> items = new ArrayList<>();
+
+    private String name;
+
+    public Long getId() {
+        return id;
+    }
+
+    public List<Item> getItems() {
+        return items;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public void setItems(List<Item> items) {
+        this.items = items;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/domain/Location.java b/spring-data-jpa/src/main/java/com/baeldung/domain/Location.java
new file mode 100644
index 0000000000..2178d378eb
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/domain/Location.java
@@ -0,0 +1,55 @@
+package com.baeldung.domain;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.OneToMany;
+
+@Entity
+public class Location {
+
+    private String city;
+    private String country;
+    @Id
+    private Long id;
+
+    @OneToMany(cascade = CascadeType.ALL)
+    @JoinColumn(name = "LOCATION_ID")
+    private List<Store> stores = new ArrayList<>();
+
+    public String getCity() {
+        return city;
+    }
+
+    public String getCountry() {
+        return country;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public List<Store> getStores() {
+        return stores;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+    public void setCountry(String country) {
+        this.country = country;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public void setStores(List<Store> stores) {
+        this.stores = stores;
+    }
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/domain/Store.java b/spring-data-jpa/src/main/java/com/baeldung/domain/Store.java
new file mode 100644
index 0000000000..e04684c479
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/domain/Store.java
@@ -0,0 +1,76 @@
+package com.baeldung.domain;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+
+@Entity
+public class Store {
+
+    private Boolean active;
+    @Id
+    private Long id;
+    @OneToMany(cascade = CascadeType.ALL)
+    @JoinColumn(name = "STORE_ID")
+    private List<Item> items = new ArrayList<>();
+    private Long itemsSold;
+
+    @ManyToOne
+    private Location location;
+
+    private String name;
+
+    public Boolean getActive() {
+        return active;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public List<Item> getItems() {
+        return items;
+    }
+
+    public Long getItemsSold() {
+        return itemsSold;
+    }
+
+    public Location getLocation() {
+        return location;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setActive(Boolean active) {
+        this.active = active;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public void setItems(List<Item> items) {
+        this.items = items;
+    }
+
+    public void setItemsSold(Long itemsSold) {
+        this.itemsSold = itemsSold;
+    }
+
+    public void setLocation(Location location) {
+        this.location = location;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/CustomItemRepository.java b/spring-data-jpa/src/main/java/com/baeldung/repository/CustomItemRepository.java
new file mode 100644
index 0000000000..91eddb800a
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/CustomItemRepository.java
@@ -0,0 +1,15 @@
+package com.baeldung.repository;
+
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.domain.Item;
+
+@Repository
+public interface CustomItemRepository {
+
+    void deleteCustom(Item entity);
+
+    Item findItemById(Long id);
+
+    void findThenDelete(Long id);
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/CustomItemTypeRepository.java b/spring-data-jpa/src/main/java/com/baeldung/repository/CustomItemTypeRepository.java
new file mode 100644
index 0000000000..77bbf294a0
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/CustomItemTypeRepository.java
@@ -0,0 +1,13 @@
+package com.baeldung.repository;
+
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.domain.ItemType;
+
+@Repository
+public interface CustomItemTypeRepository {
+
+    void deleteCustom(ItemType entity);
+
+    void findThenDelete(Long id);
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/ItemTypeRepository.java b/spring-data-jpa/src/main/java/com/baeldung/repository/ItemTypeRepository.java
new file mode 100644
index 0000000000..c3146aa297
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/ItemTypeRepository.java
@@ -0,0 +1,10 @@
+package com.baeldung.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.domain.ItemType;
+
+@Repository
+public interface ItemTypeRepository extends JpaRepository<ItemType, Long>, CustomItemTypeRepository, CustomItemRepository {
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/LocationRepository.java b/spring-data-jpa/src/main/java/com/baeldung/repository/LocationRepository.java
new file mode 100644
index 0000000000..f119ff916b
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/LocationRepository.java
@@ -0,0 +1,10 @@
+package com.baeldung.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.domain.Location;
+
+@Repository
+public interface LocationRepository extends JpaRepository<Location, Long> {
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/ReadOnlyLocationRepository.java b/spring-data-jpa/src/main/java/com/baeldung/repository/ReadOnlyLocationRepository.java
new file mode 100644
index 0000000000..2107712484
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/ReadOnlyLocationRepository.java
@@ -0,0 +1,15 @@
+package com.baeldung.repository;
+
+import java.util.Optional;
+
+import org.springframework.data.repository.Repository;
+
+import com.baeldung.domain.Location;
+
+@org.springframework.stereotype.Repository
+public interface ReadOnlyLocationRepository extends Repository<Location, Long> {
+
+    Optional<Location> findById(Long id);
+
+    Location save(Location location);
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/StoreRepository.java b/spring-data-jpa/src/main/java/com/baeldung/repository/StoreRepository.java
new file mode 100644
index 0000000000..939ca1dacb
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/StoreRepository.java
@@ -0,0 +1,13 @@
+package com.baeldung.repository;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.domain.Store;
+
+@Repository
+public interface StoreRepository extends JpaRepository<Store, Long> {
+    List<Store> findStoreByLocationId(Long locationId);
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/impl/CustomItemRepositoryImpl.java b/spring-data-jpa/src/main/java/com/baeldung/repository/impl/CustomItemRepositoryImpl.java
new file mode 100644
index 0000000000..44492a8f35
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/impl/CustomItemRepositoryImpl.java
@@ -0,0 +1,32 @@
+package com.baeldung.repository.impl;
+
+import javax.persistence.EntityManager;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.domain.Item;
+import com.baeldung.repository.CustomItemRepository;
+
+@Repository
+public class CustomItemRepositoryImpl implements CustomItemRepository {
+
+    @Autowired
+    private EntityManager entityManager;
+
+    @Override
+    public void deleteCustom(Item item) {
+        entityManager.remove(item);
+    }
+
+    @Override
+    public Item findItemById(Long id) {
+        return entityManager.find(Item.class, id);
+    }
+
+    @Override
+    public void findThenDelete(Long id) {
+        final Item item = entityManager.find(Item.class, id);
+        entityManager.remove(item);
+    }
+}
diff --git a/spring-data-jpa/src/main/java/com/baeldung/repository/impl/CustomItemTypeRepositoryImpl.java b/spring-data-jpa/src/main/java/com/baeldung/repository/impl/CustomItemTypeRepositoryImpl.java
new file mode 100644
index 0000000000..594fd24ea9
--- /dev/null
+++ b/spring-data-jpa/src/main/java/com/baeldung/repository/impl/CustomItemTypeRepositoryImpl.java
@@ -0,0 +1,31 @@
+package com.baeldung.repository.impl;
+
+import javax.persistence.EntityManager;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.domain.ItemType;
+import com.baeldung.repository.CustomItemTypeRepository;
+
+@Repository
+public class CustomItemTypeRepositoryImpl implements CustomItemTypeRepository {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(CustomItemTypeRepositoryImpl.class);
+
+    @Autowired
+    private EntityManager entityManager;
+
+    @Override
+    public void deleteCustom(ItemType itemType) {
+        entityManager.remove(itemType);
+    }
+
+    @Override
+    public void findThenDelete(Long id) {
+        ItemType itemTypeToDelete = entityManager.find(ItemType.class, id);
+        entityManager.remove(itemTypeToDelete);
+    }
+}
diff --git a/spring-data-jpa/src/test/java/com/baeldung/repository/JpaRepositoriesIntegrationTest.java b/spring-data-jpa/src/test/java/com/baeldung/repository/JpaRepositoriesIntegrationTest.java
new file mode 100644
index 0000000000..d8b7bc4a88
--- /dev/null
+++ b/spring-data-jpa/src/test/java/com/baeldung/repository/JpaRepositoriesIntegrationTest.java
@@ -0,0 +1,93 @@
+package com.baeldung.repository;
+
+import static junit.framework.TestCase.assertEquals;
+import static junit.framework.TestCase.assertFalse;
+import static junit.framework.TestCase.assertNotNull;
+import static junit.framework.TestCase.assertNull;
+import static junit.framework.TestCase.assertTrue;
+
+import java.util.List;
+import java.util.Optional;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import com.baeldung.domain.Item;
+import com.baeldung.domain.ItemType;
+import com.baeldung.domain.Location;
+import com.baeldung.domain.Store;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+public class JpaRepositoriesIntegrationTest {
+    @Autowired
+    private LocationRepository locationRepository;
+    @Autowired
+    private StoreRepository storeRepository;
+    @Autowired
+    private ItemTypeRepository compositeRepository;
+    @Autowired
+    private ReadOnlyLocationRepository readOnlyRepository;
+
+    @Test
+    public void whenSaveLocation_ThenGetSameLocation() {
+        Location location = new Location();
+        location.setId(100L);
+        location.setCountry("Country H");
+        location.setCity("City Hundred");
+        location = locationRepository.saveAndFlush(location);
+
+        Location otherLocation = locationRepository.getOne(location.getId());
+        assertEquals("Country H", otherLocation.getCountry());
+        assertEquals("City Hundred", otherLocation.getCity());
+
+        locationRepository.delete(otherLocation);
+    }
+
+    @Test
+    public void givenLocationId_whenFindStores_thenGetStores() {
+        List<Store> stores = storeRepository.findStoreByLocationId(1L);
+        assertEquals(1, stores.size());
+    }
+
+    @Test
+    public void givenItemTypeId_whenDeleted_ThenItemTypeDeleted() {
+        Optional<ItemType> itemType = compositeRepository.findById(1L);
+        assertTrue(itemType.isPresent());
+        compositeRepository.deleteCustom(itemType.get());
+        itemType = compositeRepository.findById(1L);
+        assertFalse(itemType.isPresent());
+    }
+
+    @Test
+    public void givenItemId_whenUsingCustomRepo_ThenDeleteAppropriateEntity() {
+        Item item = compositeRepository.findItemById(1L);
+        assertNotNull(item);
+        compositeRepository.deleteCustom(item);
+        item = compositeRepository.findItemById(1L);
+        assertNull(item);
+    }
+
+    @Test
+    public void givenItemAndItemType_WhenAmbiguousDeleteCalled_ThenItemTypeDeletedAndNotItem() {
+        Optional<ItemType> itemType = compositeRepository.findById(1L);
+        assertTrue(itemType.isPresent());
+        Item item = compositeRepository.findItemById(2L);
+        assertNotNull(item);
+
+        compositeRepository.findThenDelete(1L);
+        Optional<ItemType> sameItemType = compositeRepository.findById(1L);
+        assertFalse(sameItemType.isPresent());
+        Item sameItem = compositeRepository.findItemById(2L);
+        assertNotNull(sameItem);
+    }
+
+    @Test
+    public void whenCreatingReadOnlyRepo_thenHaveOnlyReadOnlyOperationsAvailable() {
+        Optional<Location> location = readOnlyRepository.findById(1L);
+        assertNotNull(location);
+    }
+}
diff --git a/spring-data-jpa/src/test/resources/application.properties b/spring-data-jpa/src/test/resources/application.properties
index de6ee2e6b5..73d72bc7d6 100644
--- a/spring-data-jpa/src/test/resources/application.properties
+++ b/spring-data-jpa/src/test/resources/application.properties
@@ -12,4 +12,4 @@ hibernate.cache.use_second_level_cache=true
 hibernate.cache.use_query_cache=true
 hibernate.cache.region.factory_class=org.hibernate.cache.ehcache.EhCacheRegionFactory
 
-spring.datasource.data=import_articles.sql
\ No newline at end of file
+spring.datasource.data=import_entities.sql
\ No newline at end of file
diff --git a/spring-data-jpa/src/test/resources/import_articles.sql b/spring-data-jpa/src/test/resources/import_articles.sql
deleted file mode 100644
index 4fe18bf4aa..0000000000
--- a/spring-data-jpa/src/test/resources/import_articles.sql
+++ /dev/null
@@ -1,3 +0,0 @@
-insert into Article(id, publication_date, publication_time, creation_date_time) values(1, TO_DATE('01/01/2018', 'DD/MM/YYYY'), TO_DATE('15:00', 'HH24:MI'), TO_DATE('31/12/2017 07:30', 'DD/MM/YYYY HH24:MI'));
-insert into Article(id, publication_date, publication_time, creation_date_time) values(2, TO_DATE('01/01/2018', 'DD/MM/YYYY'), TO_DATE('15:30', 'HH24:MI'), TO_DATE('15/12/2017 08:00', 'DD/MM/YYYY HH24:MI'));
-insert into Article(id, publication_date, publication_time, creation_date_time) values(3, TO_DATE('15/12/2017', 'DD/MM/YYYY'), TO_DATE('16:00', 'HH24:MI'), TO_DATE('01/12/2017 13:45', 'DD/MM/YYYY HH24:MI'));
\ No newline at end of file
diff --git a/spring-data-jpa/src/test/resources/import_entities.sql b/spring-data-jpa/src/test/resources/import_entities.sql
new file mode 100644
index 0000000000..deb9d07f05
--- /dev/null
+++ b/spring-data-jpa/src/test/resources/import_entities.sql
@@ -0,0 +1,21 @@
+insert into Article(id, publication_date, publication_time, creation_date_time) values(1, TO_DATE('01/01/2018', 'DD/MM/YYYY'), TO_DATE('15:00', 'HH24:MI'), TO_DATE('31/12/2017 07:30', 'DD/MM/YYYY HH24:MI'));
+insert into Article(id, publication_date, publication_time, creation_date_time) values(2, TO_DATE('01/01/2018', 'DD/MM/YYYY'), TO_DATE('15:30', 'HH24:MI'), TO_DATE('15/12/2017 08:00', 'DD/MM/YYYY HH24:MI'));
+insert into Article(id, publication_date, publication_time, creation_date_time) values(3, TO_DATE('15/12/2017', 'DD/MM/YYYY'), TO_DATE('16:00', 'HH24:MI'), TO_DATE('01/12/2017 13:45', 'DD/MM/YYYY HH24:MI'));
+
+insert into location (id, country, city) values (1, 'Country X', 'City One');
+insert into location (id, country, city) values (2, 'Country X', 'City Two');
+insert into location (id, country, city) values (3, 'Country X', 'City Three');
+
+insert into store (id, name, location_id, items_sold, active) values (1, 'Store One', 3, 130000, true);
+insert into store (id, name, location_id, items_sold, active) values (2, 'Store Two', 1, 170000, false);
+
+insert into item_type (id, name) values (1, 'Food');
+insert into item_type (id, name) values (2, 'Furniture');
+insert into item_type (id, name) values (3, 'Electronics');
+
+insert into item (id, name, store_id, item_type_id, price, grade, color) values (1, 'Food Item One', 1, 1, 100, 'A', 'Color x');
+insert into item (id, name, store_id, item_type_id, price, grade, color) values (2, 'Furniture Item One', 1, 2, 2500, 'B', 'Color y');
+insert into item (id, name, store_id, item_type_id, price, grade, color) values (3, 'Food Item Two', 1, 1, 35, 'A', 'Color z');
+insert into item (id, name, store_id, item_type_id, price, grade, color) values (5, 'Furniture Item Two', 2, 2, 1600, 'A', 'Color w');
+insert into item (id, name, store_id, item_type_id, price, grade, color) values (6, 'Food Item Three', 2, 1, 5, 'B', 'Color a');
+insert into item (id, name, store_id, item_type_id, price, grade, color) values (7, 'Electronics Item One', 2, 3, 999, 'B', 'Color b');