Created database schema SQL scripts.

Created tables: schedules, exam_assignments.
Implemented DAO classes for database operations.

src/main/java/module-info.java

@@ -1,6 +1,7 @@
 module org.example.se302 {
     requires javafx.controls;
     requires javafx.fxml;
+    requires java.sql;
 
     // Export all packages
     exports org.example.se302;

src/main/java/org/example/se302/data/DatabaseManager.java

@@ -0,0 +1,67 @@
+package org.example.se302.data;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+public class DatabaseManager {
+
+    private static final String JDBC_URL = "jdbc:sqlite:src/main/resources/db/exam_scheduler.db";
+
+    private static final String CREATE_SCHEDULES_TABLE =
+            "CREATE TABLE IF NOT EXISTS schedules (" +
+                    "    schedule_id INTEGER PRIMARY KEY AUTOINCREMENT," +
+                    "    name TEXT NOT NULL," +
+                    "    description TEXT," +
+                    "    created_at DATETIME NOT NULL," +
+                    "    last_modified DATETIME NOT NULL," +
+                    "    is_finalized BOOLEAN NOT NULL DEFAULT 0," +
+                    "    config_num_days INTEGER," +
+                    "    config_slots_per_day INTEGER," +
+                    "    config_start_date TEXT" +
+                    ");";
+
+    private static final String CREATE_EXAM_ASSIGNMENTS_TABLE =
+            "CREATE TABLE IF NOT EXISTS exam_assignments (" +
+                    "    assignment_id INTEGER PRIMARY KEY AUTOINCREMENT," +
+                    "    schedule_id INTEGER NOT NULL," +
+                    "    course_code TEXT NOT NULL," +
+                    "    student_count INTEGER NOT NULL," +
+                    "    is_locked BOOLEAN NOT NULL DEFAULT 0," +
+                    "    day_index INTEGER," +
+                    "    timeslot_index INTEGER," +
+                    "    classroom_id TEXT," +
+                    "    FOREIGN KEY (schedule_id) REFERENCES schedules(schedule_id) ON DELETE CASCADE" +
+                    ");";
+
+    public static Connection getConnection() throws SQLException {
+        return DriverManager.getConnection(JDBC_URL);
+    }
+
+    public static void CreateTable() throws SQLException
+    {
+        try (Connection conn = getConnection();
+             Statement stmt = conn.createStatement()) {
+
+            // 1. Schedules tablosunu oluştur
+            stmt.execute(CREATE_SCHEDULES_TABLE);
+
+            // 2. Exam Assignments tablosunu oluştur
+            stmt.execute(CREATE_EXAM_ASSIGNMENTS_TABLE);
+
+            System.out.println("Veritabanı tabloları başarıyla oluşturuldu veya kontrol edildi.");
+
+        } catch (SQLException e) {
+            System.err.println("Veritabanı başlatılırken hata oluştu: " + e.getMessage());
+            e.printStackTrace();
+            throw new RuntimeException("Veritabanı başlatma başarısız.", e);
+        }
+
+    }
+
+
+
+
+
+}

src/main/java/org/example/se302/data/ExamAssignmentDAO.java

@@ -0,0 +1,19 @@
+package org.example.se302.data;
+
+import org.example.se302.model.ExamAssignment;
+
+public class ExamAssignmentDAO {
+
+    public static void SaveExamAssignment(ExamAssignment examAssignment)
+    {
+
+    }
+
+    public static void DeleteExamAssignment(ExamAssignment examAssignment)
+    {
+
+    }
+
+
+
+}

src/main/java/org/example/se302/data/ScheduleDAO.java

@@ -0,0 +1,22 @@
+package org.example.se302.data;
+
+import org.example.se302.model.ExamSchedule;
+
+public class ScheduleDAO {
+
+
+    public static void SaveSchedule(ExamSchedule examSchedule)
+    {
+
+    }
+
+    public static void DeleteSchedule(ExamSchedule examSchedule)
+    {
+
+    }
+
+
+
+
+
+}