diff --git a/Database-Workshop/.idea/gradle.xml b/Database-Workshop/.idea/gradle.xml
index d41cf7d..7b6c50a 100644
--- a/Database-Workshop/.idea/gradle.xml
+++ b/Database-Workshop/.idea/gradle.xml
@@ -6,7 +6,8 @@
       <GradleProjectSettings>
         <option name="distributionType" value="LOCAL" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleHome" value="C:\Program Files\Gradle\gradle-8.12" />
+        <option name="gradleHome" value="$PROJECT_DIR$/../../../../../../Gradle/gradle-8.13" />
+        <option name="gradleJvm" value="21" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
diff --git a/Database-Workshop/build.gradle b/Database-Workshop/build.gradle
index 64b612e..4f1afe5 100644
--- a/Database-Workshop/build.gradle
+++ b/Database-Workshop/build.gradle
@@ -12,6 +12,7 @@ repositories {
 dependencies {
     testImplementation platform('org.junit:junit-bom:5.10.0')
     testImplementation 'org.junit.jupiter:junit-jupiter'
+    implementation 'org.postgresql:postgresql:42.7.3'
 }
 
 test {
diff --git a/Database-Workshop/src/main/java/org/project/DatabaseManager.java b/Database-Workshop/src/main/java/org/project/DatabaseManager.java
index 7c36930..9098ef7 100644
--- a/Database-Workshop/src/main/java/org/project/DatabaseManager.java
+++ b/Database-Workshop/src/main/java/org/project/DatabaseManager.java
@@ -1,5 +1,6 @@
 package org.project;
 
+import org.project.Models.Club;
 import org.project.Models.Player;
 
 import java.sql.Connection;
@@ -9,9 +10,9 @@
 
 public class DatabaseManager {
     // todo: modify these constants to connect to database
-    private static final String JDBC_URL = "jdbc:postgresql://localhost:5432/workshop";
+    private static final String JDBC_URL = "jdbc:postgresql://localhost:5432/Workshop";
     private static final String USERNAME = "postgres";
-    private static final String PASSWORD = "password";
+    private static final String PASSWORD = "Partow@1384";
 
     // a method to connect to database with credentials given
     private static Connection connect() throws SQLException {
@@ -20,14 +21,103 @@ private static Connection connect() throws SQLException {
 
     public static void createPlayer(Player player) throws SQLException {
         Connection conn = connect();
+
         // todo: fill the query to create a player
-        String query = "";
+        String query = "INSERT INTO players (id, full_name, club_id) VALUES (?, ?, ?)";
         PreparedStatement ps = conn.prepareStatement(query);
+        ps.setObject(1, player.getId());
+        ps.setString(2, player.getFullName());
+        ps.setObject(3, player.getClubId());
         // todo: set values of the prepared statement
         ps.executeUpdate();
         ps.close();
         conn.close();
     }
 
+    public static void createClub(Club club) throws SQLException {
+        Connection conn = connect();
+        String query = "INSERT INTO clubs (id, title, manager) VALUES (?, ?, ?)";
+        PreparedStatement ps = conn.prepareStatement(query);
+        ps.setObject(1, club.getId());
+        ps.setString(2, club.getTitle());
+        ps.setString(3, club.getManager());
+
+        ps.executeUpdate();
+        ps.close();
+        conn.close();
+
+    }
+
+
+
     // todo: create methods to complete the task of workshop
-}
+    public static void printAllClubs() throws SQLException {
+        String query = "SELECT * FROM clubs";
+        try (Connection conn = connect();
+             PreparedStatement ps = conn.prepareStatement(query);
+             var rs = ps.executeQuery()) {
+            System.out.println("Clubs:");
+            while (rs.next()) {
+                System.out.println("ID: " + rs.getObject("id")
+                        + ", Title: " + rs.getString("title")
+                        + ", Manager: " + rs.getString("manager"));
+            }
+        }
+    }
+
+
+    public static void printAllPlayers() throws SQLException {
+        String query = "SELECT * FROM players";
+        try (Connection conn = connect();
+             PreparedStatement ps = conn.prepareStatement(query);
+             var rs = ps.executeQuery()) {
+            System.out.println("Players:");
+            while (rs.next()) {
+                System.out.println("ID: " + rs.getObject("id")
+                        + ", Full Name: " + rs.getString("full_name")
+                        + ", Club ID: " + rs.getObject("club_id"));
+            }
+        }
+    }
+
+    public static void updatePlayerClub(String playerFullName, Object newClubId) throws SQLException {
+        String query = "UPDATE players SET club_id = ? WHERE full_name = ?";
+        try (Connection conn = connect();
+             PreparedStatement ps = conn.prepareStatement(query)) {
+            ps.setObject(1, newClubId);
+            ps.setString(2, playerFullName);
+            ps.executeUpdate();
+        }
+    }
+
+
+    public static void updateClubManager(String clubTitle, String newManager) throws SQLException {
+        String query = "UPDATE clubs SET manager = ? WHERE title = ?";
+        try (Connection conn = connect();
+             PreparedStatement ps = conn.prepareStatement(query)) {
+            ps.setString(1, newManager);
+            ps.setString(2, clubTitle);
+            ps.executeUpdate();
+        }
+    }
+
+    public static void deletePlayer(String playerFullName) throws SQLException {
+        String query = "DELETE FROM players WHERE full_name = ?";
+        try (Connection conn = connect();
+             PreparedStatement ps = conn.prepareStatement(query)) {
+            ps.setString(1, playerFullName);
+            ps.executeUpdate();
+        }
+    }
+
+
+    public static void deleteClub(String clubTitle) throws SQLException {
+        String query = "DELETE FROM clubs WHERE title = ?";
+        try (Connection conn = connect();
+             PreparedStatement ps = conn.prepareStatement(query)) {
+            ps.setString(1, clubTitle);
+            ps.executeUpdate();
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/Database-Workshop/src/main/java/org/project/Main.java b/Database-Workshop/src/main/java/org/project/Main.java
index 91eca74..178cf68 100644
--- a/Database-Workshop/src/main/java/org/project/Main.java
+++ b/Database-Workshop/src/main/java/org/project/Main.java
@@ -3,19 +3,47 @@
 import org.project.Models.Club;
 import org.project.Models.Player;
 
+import java.sql.SQLException;
 import java.util.UUID;
 
 public class Main {
-    public static void main(String[] args) {
+    public static void main(String[] args) throws SQLException {
         // club instances
         Club club1 = new Club(UUID.randomUUID(), "Real Madrid", "Carlo Ancelotti");
         Club club2 = new Club(UUID.randomUUID(), "Liverpool", "Arne Slot");
+
+        DatabaseManager.createClub(club1);
+        DatabaseManager.createClub(club2);
+
         // player instances
         Player player1 = new Player(UUID.randomUUID(), "Thibaut Courtois", club1.getId());
         Player player2 = new Player(UUID.randomUUID(), "Jude Bellingham", club1.getId());
         Player player3 = new Player(UUID.randomUUID(), "Trent Alexander-Arnold", club2.getId());
         Player player4 = new Player(UUID.randomUUID(), "Federico Valverde", club1.getId());
 
-        // todo: call methods to run queries
+        DatabaseManager.createPlayer(player1);
+        DatabaseManager.createPlayer(player2);
+        DatabaseManager.createPlayer(player3);
+        DatabaseManager.createPlayer(player4);
+
+        System.out.println("Initial data:");
+        DatabaseManager.printAllClubs();
+        DatabaseManager.printAllPlayers();
+
+
+        DatabaseManager.updatePlayerClub("Trent Alexander-Arnold", club1.getId());
+        DatabaseManager.updateClubManager("Real Madrid", "Xabi Alonso");
+
+        System.out.println("\nAfter update:");
+        DatabaseManager.printAllClubs();
+        DatabaseManager.printAllPlayers();
+
+
+        DatabaseManager.deletePlayer("Jude Bellingham");
+        DatabaseManager.deleteClub("Liverpool");
+
+        System.out.println("\nAfter delete:");
+        DatabaseManager.printAllClubs();
+        DatabaseManager.printAllPlayers();
     }
 }
\ No newline at end of file
diff --git a/Database-Workshop/src/main/java/org/project/Models/Club.java b/Database-Workshop/src/main/java/org/project/Models/Club.java
index eba8e78..2f88260 100644
--- a/Database-Workshop/src/main/java/org/project/Models/Club.java
+++ b/Database-Workshop/src/main/java/org/project/Models/Club.java
@@ -39,4 +39,4 @@ public String getManager() {
     public void setManager(String manager) {
         Manager = manager;
     }
-}
+}
\ No newline at end of file
diff --git a/Database-Workshop/src/main/java/org/project/Models/Player.java b/Database-Workshop/src/main/java/org/project/Models/Player.java
index 3c9f5a3..5e558cf 100644
--- a/Database-Workshop/src/main/java/org/project/Models/Player.java
+++ b/Database-Workshop/src/main/java/org/project/Models/Player.java
@@ -36,4 +36,4 @@ public UUID getClubId() {
     public void setClubId(UUID clubId) {
         this.clubId = clubId;
     }
-}
+}
\ No newline at end of file