diff --git a/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java b/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
index 4f1aa7d..7f4b6ea 100644
--- a/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
+++ b/buisnesslogic/src/main/java/com/plannaplan/entities/Groups.java
@@ -4,6 +4,8 @@ import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
 
 import com.plannaplan.types.GroupType;
 import com.plannaplan.types.WeekDay;
@@ -19,10 +21,21 @@ public class Groups {
     private int capacity;
     private GroupType type;
     private WeekDay day;
+    @ManyToOne
+    @JoinColumn(name = "lecturer_id")
+    private Lecturer lecturer;
 
     public Groups() {
     }
 
+    public Lecturer getLecturer() {
+        return lecturer;
+    }
+
+    public void setLecturer(Lecturer lecturer) {
+        this.lecturer = lecturer;
+    }
+
     public WeekDay getDay() {
         return day;
     }
diff --git a/buisnesslogic/src/main/java/com/plannaplan/entities/Lecturer.java b/buisnesslogic/src/main/java/com/plannaplan/entities/Lecturer.java
new file mode 100644
index 0000000..61d5e9a
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/entities/Lecturer.java
@@ -0,0 +1,44 @@
+package com.plannaplan.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class Lecturer {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private String title;
+    private String name;
+    private String surname;
+
+    public Lecturer() {
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getSurname() {
+        return surname;
+    }
+
+    public void setSurname(String surname) {
+        this.surname = surname;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/repositories/LecturerRepository.java b/buisnesslogic/src/main/java/com/plannaplan/repositories/LecturerRepository.java
new file mode 100644
index 0000000..1651bdb
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/repositories/LecturerRepository.java
@@ -0,0 +1,12 @@
+package com.plannaplan.repositories;
+
+import com.plannaplan.entities.Lecturer;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+
+public interface LecturerRepository extends JpaRepository<Lecturer, Long> {
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/services/LecturerService.java b/buisnesslogic/src/main/java/com/plannaplan/services/LecturerService.java
new file mode 100644
index 0000000..3b2de4b
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/services/LecturerService.java
@@ -0,0 +1,12 @@
+package com.plannaplan.services;
+
+import com.plannaplan.repositories.LecturerRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class LecturerService {
+    @Autowired
+    LecturerRepository repo;
+}
\ No newline at end of file
diff --git a/restservice/src/main/resources/application.properties b/restservice/src/main/resources/application.properties
index d7a0cf8..309a6b7 100644
--- a/restservice/src/main/resources/application.properties
+++ b/restservice/src/main/resources/application.properties
@@ -4,7 +4,7 @@ spring.datasource.username=root
 spring.datasource.password=example
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 spring.jpa.open-in-view=true
-spring.jpa.hibernate.ddl-auto=create
+spring.jpa.hibernate.ddl-auto=create-drop
 spring.jackson.serialization.fail-on-empty-beans=false
 
 server.port=1285
\ No newline at end of file