diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/Tweet.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/Tweet.java
new file mode 100644
index 0000000000..13576f32f6
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/Tweet.java
@@ -0,0 +1,37 @@
+package com.baeldung.repositoryvsdaopattern;
+
+import java.util.Date;
+
+public class Tweet {
+    
+    private String email;
+    
+    private String tweetText;
+    
+    private Date dateCreated;
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getTweetText() {
+        return tweetText;
+    }
+
+    public void setTweetText(String tweetText) {
+        this.tweetText = tweetText;
+    }
+
+    public Date getDateCreated() {
+        return dateCreated;
+    }
+
+    public void setDateCreated(Date dateCreated) {
+        this.dateCreated = dateCreated;
+    }
+
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/TweetDao.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/TweetDao.java
new file mode 100644
index 0000000000..144c04e0ad
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/TweetDao.java
@@ -0,0 +1,9 @@
+package com.baeldung.repositoryvsdaopattern;
+
+import java.util.List;
+
+public interface TweetDao {
+
+    List<Tweet> fetchTweets(String email);
+    
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/TweetDaoImpl.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/TweetDaoImpl.java
new file mode 100644
index 0000000000..6e4e8a8985
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/TweetDaoImpl.java
@@ -0,0 +1,17 @@
+package com.baeldung.repositoryvsdaopattern;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class TweetDaoImpl implements TweetDao {
+
+    @Override
+    public List<Tweet> fetchTweets(String email) {
+        List<Tweet> tweets = new ArrayList<Tweet>();
+        
+        //call Twitter API and prepare Tweet object
+        
+        return tweets;
+    }
+
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/User.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/User.java
new file mode 100644
index 0000000000..8cd4fd0a00
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/User.java
@@ -0,0 +1,51 @@
+package com.baeldung.repositoryvsdaopattern;
+
+public class User {
+    
+    private Long id;
+    private String userName;
+    private String firstName;
+    private String lastName;
+    private String email;
+    
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUserName() {
+        return userName;
+    }
+    
+    public void setUserName(String userName) {
+        this.userName = userName;
+    }
+    
+    public String getFirstName() {
+        return firstName;
+    }
+    
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+    
+    public String getLastName() {
+        return lastName;
+    }
+    
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+    
+    public String getEmail() {
+        return email;
+    }
+    
+    public void setEmail(String email) {
+        this.email = email;
+    }
+    
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserDao.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserDao.java
new file mode 100644
index 0000000000..47fe2e3262
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserDao.java
@@ -0,0 +1,13 @@
+package com.baeldung.repositoryvsdaopattern;
+
+public interface UserDao {
+    
+    void create(User user);
+    
+    User read(Long id);
+    
+    void update(User user);
+    
+    void delete(String userName);
+
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserDaoImpl.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserDaoImpl.java
new file mode 100644
index 0000000000..24ca04263b
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserDaoImpl.java
@@ -0,0 +1,33 @@
+package com.baeldung.repositoryvsdaopattern;
+
+import javax.persistence.EntityManager;
+
+public class UserDaoImpl implements UserDao {
+
+    private final EntityManager entityManager;
+    
+    public UserDaoImpl(EntityManager entityManager) {
+        this.entityManager = entityManager;
+    }
+
+    @Override 
+    public void create(User user) { 
+        entityManager.persist(user); 
+    }
+    
+    @Override
+    public User read(Long id) {
+        return entityManager.find(User.class, id);
+    } 
+
+    @Override
+    public void update(User user) {
+        
+    }
+
+    @Override
+    public void delete(String userName) {
+        
+    }
+
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserRepository.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserRepository.java
new file mode 100644
index 0000000000..1da384958d
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserRepository.java
@@ -0,0 +1,21 @@
+package com.baeldung.repositoryvsdaopattern;
+
+import java.util.List;
+
+public interface UserRepository {
+    
+    User get(Long id);
+    
+    void add(User user);
+    
+    void update(User user);
+    
+    void remove(User user);
+    
+    User findByUserName(String userName);
+    
+    User findByEmail(String email);
+    
+    List<Tweet> fetchTweets(User user);
+    
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserRepositoryImpl.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserRepositoryImpl.java
new file mode 100644
index 0000000000..806b44e9d5
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserRepositoryImpl.java
@@ -0,0 +1,51 @@
+package com.baeldung.repositoryvsdaopattern;
+
+import java.util.List;
+
+public class UserRepositoryImpl implements UserRepository {
+
+    private UserDaoImpl userDaoImpl;
+    private TweetDaoImpl tweetDaoImpl;
+    
+    @Override
+    public User get(Long id) {
+        UserSocialMedia user = (UserSocialMedia) userDaoImpl.read(id);
+        
+        List<Tweet> tweets = tweetDaoImpl.fetchTweets(user.getEmail());
+        user.setTweets(tweets);
+        
+        return user;
+    }
+    
+    @Override
+    public void add(User user) {
+        userDaoImpl.create(user);
+    }
+
+    @Override
+    public void remove(User user) {
+        
+    }
+
+    @Override
+    public void update(User user) {
+        
+    }
+
+    @Override
+    public List<Tweet> fetchTweets(User user) {
+        return tweetDaoImpl.fetchTweets(user.getEmail());
+        
+    }
+    
+    @Override
+    public User findByUserName(String userName) {
+        return null;
+    }
+    
+    @Override
+    public User findByEmail(String email) {
+        return null;
+    }
+
+}
diff --git a/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserSocialMedia.java b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserSocialMedia.java
new file mode 100644
index 0000000000..bf729620af
--- /dev/null
+++ b/patterns/design-patterns-architectural/src/main/java/com/baeldung/repositoryvsdaopattern/UserSocialMedia.java
@@ -0,0 +1,17 @@
+package com.baeldung.repositoryvsdaopattern;
+
+import java.util.List;
+
+public class UserSocialMedia extends User {
+    
+    private List<Tweet> tweets;
+    
+    public List<Tweet> getTweets() {
+        return tweets;
+    }
+
+    public void setTweets(List<Tweet> tweets) {
+        this.tweets = tweets;
+    }
+
+}