The code for Lab_7_example.txt is: class (ClassID*, CourseNo@) 123456, CST1611 345678, CST1600 234567, CST2608 456789, CST1022 567890, CST1600 class_instructor (ClassID*@, InstrNo*@) 123456, 00007967 345678, 00007967 234567, 00007967 234567, 00008843 456789, 00008612 567890, 00007967 class_room (ClassID*@, Room*@) 123456, rm327 345678, rm327 234567, rm328 234567, B48 456789, rm345 456789, B67 567890, rm327 course (CourseNo*, CourseName) CST1611, Web Server Administration CST1600, Relational Databases CST2608, Linux Server Administration CST1022, HTML II and Javascript instructor (InstrNo*, firstName, lastName) 00007967, Jim, Martinson 00008843, Rocky, Hyberger 00008612, Allen, Benusa major (MajorCode*) NSA CP CST MAD room (Room*) rm328 B48 rm327 rm345 B67 student (StudentNo*, firstName, lastName) 34673656, Avram, Hinton 94086534, Kristen, Acosta 83681840, Hayes, Gibson student_major (StudentNo*@, MajorCode*@) 34673656, NSA 94086534, CP 83681840, CST 94086534, MAD studentclassgrade (StudentNo*@, ClassID*@, Grade) 34673656, 123456, A 94086534, 345678, F 34673656, 234567, C 83681840, 345678, A 94086534, 456789, B 94086534, 567890, A