Change tables

@@ -16,7 +16,7 @@ CREATE TABLE student_attendance(
 lecture_id VARCHAR(20) NOT NULL,
 student_id VARCHAR(10) NOT NULL,
 status VARCHAR(10) NOT NULL,
-attendance_time DATETIME DEFAULT CURRENT_TIMESTAMP, 
+timestamp DATETIME DEFAULT CURRENT_TIMESTAMP, 
 FOREIGN KEY (lecture_id) REFERENCES lecture(lecture_id),
 FOREIGN KEY (student_id) REFERENCES student(student_id)
 );
@@ -27,6 +27,7 @@ date DATE NOT NULL,
 image BLOB NOT NULL,
 width SMALLINT NOT NULL,
 height SMALLINT NOT NULL,
+timestamp DATETIME DEFAULT CURRENT_TIMESTAMP, 
 FOREIGN KEY (lecture_id) REFERENCES lecture(lecture_id)
 );