diff --git a/src/main/java/doit/jpastudy2/JpaRepository/Champion.java b/src/main/java/doit/jpastudy2/JpaRepository/Champion.java
new file mode 100644
index 0000000..2ff34b9
--- /dev/null
+++ b/src/main/java/doit/jpastudy2/JpaRepository/Champion.java
@@ -0,0 +1,28 @@
+package doit.jpastudy2.JpaRepository;
+
+import jakarta.persistence.*;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@NoArgsConstructor
+@Getter
+public class Champion {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "Id_champion")
+    private Long id;
+
+    private String name;
+
+    private Integer cost;
+
+    @Builder
+    public Champion(String name, int cost) {
+        this.name = name;
+        this.cost = cost;
+    }
+
+}
diff --git a/src/main/java/doit/jpastudy2/JpaRepository/ChampionRepository.java b/src/main/java/doit/jpastudy2/JpaRepository/ChampionRepository.java
new file mode 100644
index 0000000..5362cd6
--- /dev/null
+++ b/src/main/java/doit/jpastudy2/JpaRepository/ChampionRepository.java
@@ -0,0 +1,12 @@
+package doit.jpastudy2.JpaRepository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ChampionRepository  extends JpaRepository<Champion, Long> {
+
+    Champion findByName(String name);
+
+    Champion findByCost(Integer cost);
+
+    Champion findByNameAndCost(String name, Integer cost);
+}
diff --git a/src/main/java/doit/jpastudy2/JpaRepository/Mapping.java b/src/main/java/doit/jpastudy2/JpaRepository/Mapping.java
new file mode 100644
index 0000000..b74b667
--- /dev/null
+++ b/src/main/java/doit/jpastudy2/JpaRepository/Mapping.java
@@ -0,0 +1,13 @@
+package doit.jpastudy2.JpaRepository;
+
+import jakarta.persistence.Entity;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@NoArgsConstructor
+@Getter
+public class Mapping {
+
+
+}
diff --git a/src/main/java/doit/jpastudy2/JpaRepository/Synergy.java b/src/main/java/doit/jpastudy2/JpaRepository/Synergy.java
new file mode 100644
index 0000000..e5dcdbb
--- /dev/null
+++ b/src/main/java/doit/jpastudy2/JpaRepository/Synergy.java
@@ -0,0 +1,27 @@
+package doit.jpastudy2.JpaRepository;
+
+import jakarta.persistence.*;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Entity
+@NoArgsConstructor
+@Getter
+public class Synergy {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name = "Id_synergy")
+    private Long id;
+
+    private String name;
+
+    private Integer max_activate;
+
+    @Builder
+    public Synergy(String name, Integer max_activate) {
+        this.name = name;
+        this.max_activate = max_activate;
+    }
+}
diff --git a/src/main/java/doit/jpastudy2/JpaRepository/SynergyRepository.java b/src/main/java/doit/jpastudy2/JpaRepository/SynergyRepository.java
new file mode 100644
index 0000000..ce20ce5
--- /dev/null
+++ b/src/main/java/doit/jpastudy2/JpaRepository/SynergyRepository.java
@@ -0,0 +1,12 @@
+package doit.jpastudy2.JpaRepository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface SynergyRepository extends JpaRepository<Synergy,Long> {
+
+    Synergy findByName(String name);
+
+    Synergy findByMaxActivate(Integer maxActivate);
+
+    Synergy findByNameAndMaxActivate(String name, Integer maxActivate);
+}
diff --git a/src/test/java/doit/jpastudy2/Jparepository/ChampionRepositoryTest.java b/src/test/java/doit/jpastudy2/Jparepository/ChampionRepositoryTest.java
new file mode 100644
index 0000000..72eb92b
--- /dev/null
+++ b/src/test/java/doit/jpastudy2/Jparepository/ChampionRepositoryTest.java
@@ -0,0 +1,47 @@
+package doit.jpastudy2.Jparepository;
+
+import doit.jpastudy2.JpaRepository.Champion;
+import doit.jpastudy2.JpaRepository.ChampionRepository;
+import jakarta.transaction.Transactional;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@Transactional
+@SpringBootTest
+public class ChampionRepositoryTest {
+
+    @Autowired
+    private ChampionRepository championRepository;
+
+    @Test
+    void test() {
+        Champion champion1 = Champion.builder()
+                .name("누누")
+                .cost(2)
+                .build();
+
+        Champion champion2 = Champion.builder()
+                .name("헤카림")
+                .cost(3)
+                .build();
+
+
+        championRepository.save(champion1);
+        championRepository.save(champion2);
+
+        Champion championTest = championRepository.findByCost(2);
+        Champion championTest2 = championRepository.findByName("헤카림");
+        Champion championTest3 = championRepository.findByNameAndCost("누누", 2);
+        Champion championTest4 = championRepository.findByCost(5);
+
+        Assertions.assertThat(championTest).isNull();
+        Assertions.assertThat(championTest2).isNull();
+        Assertions.assertThat(championTest3).isNull();
+        Assertions.assertThat(championTest4).isNotNull();
+
+        System.out.println("First champion in DB : " + champion1.getName());
+        System.out.println("Second champion in DB : " + champion2.getName());
+    }
+}
diff --git a/src/test/java/doit/jpastudy2/Jparepository/SynergyRepositoryTest.java b/src/test/java/doit/jpastudy2/Jparepository/SynergyRepositoryTest.java
new file mode 100644
index 0000000..79c4d79
--- /dev/null
+++ b/src/test/java/doit/jpastudy2/Jparepository/SynergyRepositoryTest.java
@@ -0,0 +1,48 @@
+package doit.jpastudy2.Jparepository;
+
+import doit.jpastudy2.JpaRepository.Synergy;
+import doit.jpastudy2.JpaRepository.SynergyRepository;
+import jakarta.transaction.Transactional;
+import org.assertj.core.api.Assertions;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@Transactional
+@SpringBootTest
+public class SynergyRepositoryTest {
+    private SynergyRepository synergyRepository;
+
+    void test() {
+        Synergy synergy1 = Synergy.builder()
+                .name("벌꿀술사")
+                .max_activate(7)
+                .build();
+
+        Synergy synergy2 = Synergy.builder()
+                .name("요새")
+                .max_activate(6)
+                .build();
+
+        Synergy synergy3 = Synergy.builder()
+                .name("쇄도자")
+                .max_activate(9)
+                .build();
+
+        synergyRepository.save(synergy1);
+        synergyRepository.save(synergy2);
+        synergyRepository.save(synergy3);
+
+        Synergy synergyTest = synergyRepository.findByName("벌꿀술사");
+        Synergy synergyTest2 = synergyRepository.findByMaxActivate(9);
+        Synergy synergyTest3 = synergyRepository.findByNameAndMaxActivate("쇄도자", 9);
+        Synergy synergyTest4 = synergyRepository.findByName("서리");
+
+        Assertions.assertThat(synergyTest).isNull();
+        Assertions.assertThat(synergyTest2).isNull();
+        Assertions.assertThat(synergyTest3).isNull();
+        Assertions.assertThat(synergyTest4).isNotNull();
+
+        System.out.println("First synergy in DB : " + synergy1.getName());
+        System.out.println("Second synergy in DB : " + synergy2.getName());
+        System.out.println("Third synergy in DB : " + synergy3.getName());
+    }
+}