diff --git a/buisnesslogic/src/main/java/com/plannaplan/entities/Assignment.java b/buisnesslogic/src/main/java/com/plannaplan/entities/Assignment.java
new file mode 100644
index 0000000..72e52f8
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/entities/Assignment.java
@@ -0,0 +1,24 @@
+package com.plannaplan.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+@Entity
+public class Assignment {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    @ManyToOne
+    @JoinColumn(name = "group_id")
+    private Groups group;
+    @ManyToOne
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    public Assignment() {
+    }
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/entities/User.java b/buisnesslogic/src/main/java/com/plannaplan/entities/User.java
new file mode 100644
index 0000000..c40d984
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/entities/User.java
@@ -0,0 +1,45 @@
+package com.plannaplan.entities;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+import com.plannaplan.types.UserRoles;
+
+@Entity
+public class User {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private String name;
+    private String surname;
+    private UserRoles role;
+
+    public User() {
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public UserRoles getRole() {
+        return role;
+    }
+
+    public void setRole(UserRoles role) {
+        this.role = role;
+    }
+
+    public String getSurname() {
+        return surname;
+    }
+
+    public void setSurname(String surname) {
+        this.surname = surname;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/repositories/AssignmentRepository.java b/buisnesslogic/src/main/java/com/plannaplan/repositories/AssignmentRepository.java
new file mode 100644
index 0000000..19af52d
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/repositories/AssignmentRepository.java
@@ -0,0 +1,11 @@
+package com.plannaplan.repositories;
+
+import com.plannaplan.entities.Assignment;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface AssignmentRepository extends JpaRepository<Assignment, Long> {
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/repositories/UserRepository.java b/buisnesslogic/src/main/java/com/plannaplan/repositories/UserRepository.java
new file mode 100644
index 0000000..19f1ac6
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/repositories/UserRepository.java
@@ -0,0 +1,11 @@
+package com.plannaplan.repositories;
+
+import com.plannaplan.entities.User;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface UserRepository extends JpaRepository<User, Long> {
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java b/buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java
new file mode 100644
index 0000000..a133d44
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/services/AssignmentService.java
@@ -0,0 +1,19 @@
+package com.plannaplan.services;
+
+import com.plannaplan.interfaces.EventCreator;
+import com.plannaplan.repositories.AssignmentRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class AssignmentService implements EventCreator {
+    @Autowired
+    AssignmentRepository repo;
+
+    @Override
+    public void update() {
+        // TODO Auto-generated method stub
+
+    }
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/services/UserService.java b/buisnesslogic/src/main/java/com/plannaplan/services/UserService.java
new file mode 100644
index 0000000..18ca809
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/services/UserService.java
@@ -0,0 +1,20 @@
+package com.plannaplan.services;
+
+import com.plannaplan.interfaces.EventCreator;
+import com.plannaplan.repositories.UserRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class UserService implements EventCreator {
+    @Autowired
+    UserRepository repo;
+
+    @Override
+    public void update() {
+        // TODO Auto-generated method stub
+
+    }
+
+}
\ No newline at end of file
diff --git a/buisnesslogic/src/main/java/com/plannaplan/types/UserRoles.java b/buisnesslogic/src/main/java/com/plannaplan/types/UserRoles.java
new file mode 100644
index 0000000..f56d2c5
--- /dev/null
+++ b/buisnesslogic/src/main/java/com/plannaplan/types/UserRoles.java
@@ -0,0 +1,5 @@
+package com.plannaplan.types;
+
+public enum UserRoles {
+    STUDENT, DEANERY, ADMIN
+}
\ No newline at end of file