Create database.py

database.py

@@ -0,0 +1,126 @@
+import sqlite3
+
+# Create and initialize the database
+def initialize_database():
+    conn = sqlite3.connect("college.db")
+    cursor = conn.cursor()
+
+    # Create student table
+    cursor.execute("""
+    CREATE TABLE IF NOT EXISTS student (
+        student_id INTEGER PRIMARY KEY,
+        first_name TEXT,
+        last_name TEXT,
+        date_of_birth DATE,
+        email TEXT,
+        phone_number TEXT,
+        major TEXT,
+        year_of_enrollment INTEGER
+    );
+    """)
+
+    # Create employee table
+    cursor.execute("""
+    CREATE TABLE IF NOT EXISTS employee (
+        employee_id INTEGER PRIMARY KEY,
+        first_name TEXT,
+        last_name TEXT,
+        email TEXT,
+        department TEXT,
+        position TEXT,
+        salary REAL,
+        date_of_joining DATE
+    );
+    """)
+
+    # Create course table
+    cursor.execute("""
+    CREATE TABLE IF NOT EXISTS course (
+        course_id INTEGER PRIMARY KEY,
+        course_name TEXT,
+        course_code TEXT,
+        instructor_id INTEGER,
+        department TEXT,
+        credits INTEGER,
+        semester TEXT,
+        FOREIGN KEY (instructor_id) REFERENCES employee(employee_id)
+    );
+    """)
+
+    # Clear old data (order matters to avoid foreign key errors)
+    cursor.execute("DELETE FROM course;")
+    cursor.execute("DELETE FROM student;")
+    cursor.execute("DELETE FROM employee;")
+
+    # Insert sample data into student table
+    students = [
+        (1, "Alice", "Johnson", "2001-06-15", "alice@example.com", "1234567890", "Computer Science", 2019),
+        (2, "Bob", "Smith", "2000-04-22", "bob@example.com", "0987654321", "Mechanical Engineering", 2018),
+        (3, "Charlie", "Brown", "2002-01-10", "charlie@example.com", "1112223333", "ECE", 2020),
+        (4, "Daisy", "Miller", "2001-12-12", "daisy@example.com", "2223334444", "Civil", 2019),
+        (5, "Ethan", "Lee", "2000-05-05", "ethan@example.com", "3334445555", "IT", 2018),
+        (6, "Fiona", "Clark", "2001-07-07", "fiona@example.com", "4445556666", "CSE", 2020),
+        (7, "George", "Adams", "2002-02-02", "george@example.com", "5556667777", "CSE", 2021),
+        (8, "Hannah", "Moore", "2001-11-11", "hannah@example.com", "6667778888", "AI", 2019),
+        (9, "Ivan", "Davis", "1999-09-09", "ivan@example.com", "7778889999", "ECE", 2017),
+        (10, "Julia", "King", "2002-03-03", "julia@example.com", "8889990000", "IT", 2020)
+    ]
+    cursor.executemany("INSERT INTO student VALUES (?, ?, ?, ?, ?, ?, ?, ?);", students)
+
+    # Insert sample data into employee table
+    employees = [
+        (1, "Drake", "Miller", "drake@example.com", "CSE", "Professor", 75000.00, "2015-08-01"),
+        (2, "Laura", "White", "laura@example.com", "ECE", "Assistant Professor", 65000.00, "2018-07-10"),
+        (3, "James", "Hall", "james@example.com", "IT", "Lecturer", 55000.00, "2019-01-15"),
+        (4, "Nancy", "Allen", "nancy@example.com", "Civil", "Professor", 80000.00, "2014-06-12"),
+        (5, "Oscar", "Wright", "oscar@example.com", "Mechanical", "Assistant Professor", 60000.00, "2016-10-01"),
+        (6, "Rachel", "Baker", "rachel@example.com", "AI", "Lecturer", 52000.00, "2020-03-05"),
+        (7, "Steve", "Lopez", "steve@example.com", "CSE", "Professor", 78000.00, "2012-08-20"),
+        (8, "Tina", "Hill", "tina@example.com", "ECE", "Lecturer", 53000.00, "2017-09-18"),
+        (9, "Uma", "Scott", "uma@example.com", "IT", "Professor", 72000.00, "2013-04-07"),
+        (10, "Victor", "Green", "victor@example.com", "CSE", "Assistant Professor", 60000.00, "2018-11-23")
+    ]
+    cursor.executemany("INSERT INTO employee VALUES (?, ?, ?, ?, ?, ?, ?, ?);", employees)
+
+    # Insert sample data into course table
+    courses = [
+        (1, "Database Systems", "CS301", 1, "CSE", 4, "Fall"),
+        (2, "Digital Electronics", "EC202", 2, "ECE", 3, "Spring"),
+        (3, "Operating Systems", "CS302", 1, "CSE", 4, "Fall"),
+        (4, "Data Structures", "CS201", 10, "CSE", 4, "Spring"),
+        (5, "Microprocessors", "EC303", 8, "ECE", 3, "Fall"),
+        (6, "Civil Engineering Basics", "CV101", 4, "Civil", 3, "Spring"),
+        (7, "Thermodynamics", "ME201", 5, "Mechanical", 4, "Fall"),
+        (8, "AI Fundamentals", "AI101", 6, "AI", 3, "Fall"),
+        (9, "Web Technologies", "IT301", 3, "IT", 4, "Spring"),
+        (10, "Software Engineering", "CS303", 7, "CSE", 4, "Fall")
+    ]
+    cursor.executemany("INSERT INTO course VALUES (?, ?, ?, ?, ?, ?, ?);", courses)
+
+    conn.commit()
+    conn.close()
+
+# Function to execute SQL query and return results
+def run_sql_query(sql_query):
+    try:
+        conn = sqlite3.connect("college.db")
+        cursor = conn.cursor()
+        cursor.execute(sql_query)
+        rows = cursor.fetchall()
+        column_names = [description[0] for description in cursor.description] if cursor.description else []
+        conn.commit()
+        conn.close()
+
+        if not rows:
+            return "No rows returned."
+
+        result = "\t".join(column_names) + "\n"
+        for row in rows:
+            result += "\t".join(str(cell) for cell in row) + "\n"
+        return result.strip()
+    except Exception as e:
+        return f"Error executing query: {e}"
+
+# Run only if this script is the main entry point
+if __name__ == "__main__":
+    initialize_database()