diff --git a/lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/models/LibraryUserModel.java b/lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/models/LibraryUserModel.java
new file mode 100644
index 000000000..788dc5a4f
--- /dev/null
+++ b/lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/models/LibraryUserModel.java
@@ -0,0 +1,24 @@
+package com.codedifferently.lesson25.models;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import java.util.UUID;
+
+@Entity
+@Table(name = "library_users")
+public class LibraryUserModel {
+
+  @Id public UUID id;
+  public String email;
+
+  @Column(name = "first_name")
+  public String firstName;
+
+  @Column(name = "last_name")
+  public String lastName;
+
+  @Column(name = "password_hash")
+  public String passwordHash;
+}
diff --git a/lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/repository/LibraryUserRepository.java b/lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/repository/LibraryUserRepository.java
new file mode 100644
index 000000000..68e342050
--- /dev/null
+++ b/lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/repository/LibraryUserRepository.java
@@ -0,0 +1,12 @@
+package com.codedifferently.lesson25.repository;
+
+import com.codedifferently.lesson25.models.LibraryUserModel;
+import java.util.List;
+import java.util.UUID;
+import org.springframework.data.repository.CrudRepository;
+
+public interface LibraryUserRepository extends CrudRepository<LibraryUserModel, UUID> {
+
+  @Override
+  List<LibraryUserModel> findAll();
+}
diff --git a/lesson_25/db/db_app/src/main/resources/queries/danielsonadjocy.sql b/lesson_25/db/db_app/src/main/resources/queries/danielsonadjocy.sql
new file mode 100644
index 000000000..f45ca5afb
--- /dev/null
+++ b/lesson_25/db/db_app/src/main/resources/queries/danielsonadjocy.sql
@@ -0,0 +1,27 @@
+select type , COUNT(*) as count 
+from mediaItems group by type;
+
+select SUM(pages) as total_pages 
+from checked_out_items INNER JOIN mediaItems 
+ON checked_out_items.item_id = mediaItems.id 
+where mediaItems.pages IS NOT NULL;
+
+
+select guests.id, guests.name, checked_out_items.item_id, checked_out_items.checked_out_date
+from guests
+left join checked_out_items on guests.id = checked_out_items.guest_id;
+
+CREATE Table library_users (
+    id UUID PRIMARY KEY,
+    email VARCHAR(100) UNIQUE NOT NULL,
+    first_name VARCHAR(50) NOT NULL,
+    last_name VARCHAR(50) NOT NULL,
+    password_hash CHAR(60) NOT NULL
+);
+
+-- Inserting users: passwords are all "password123" hashed with bcrypt.
+INSERT INTO library_users (id, email, first_name, last_name, password_hash) VALUES
+('550e8400-e29b-41d4-a716-446655440001', 'john.doe@example.com', 'John', 'Doe', '$2a$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2uheWG/igi.'),
+('550e8400-e29b-41d4-a716-446655440002', 'jane.smith@example.com', 'Jane', 'Smith', '$2a$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2uheWG/igi.'),
+('550e8400-e29b-41d4-a716-446655440003', 'bob.johnson@example.com', 'Bob', 'Johnson', '$2a$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2uheWG/igi.'),
+('550e8400-e29b-41d4-a716-446655440004', 'alice.williams@example.com', 'Alice', 'Williams', '$2a$10$92IXUNpkjO0rOQ5byMi.Ye4oKoEa3Ro9llC/.og/at2uheWG/igi.');
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