Composite and multi-valued attributes can be nested to any number of levels. Suppose we want to design an attribute (one attribute) for a STUDENT entity type to keep track of previous college education. Such an attribute will have one entry for each college previously attended, and this entry is composed of: college name, start and end dates, degree entries (degrees awarded at that college, if any), and transcript entries (courses completed at that college, if any). Each degree entry is formed of degree name and the month and year it was awarded, and each transcript entry is formed of a course name, semester, year, instructor and grade. Design an attribute (note – attribute only!!!) to hold this information.
The question belongs to Computer Science and it is about preparing a simple ER diagram or schema with student information on prior education. The solution clearly explains this schema diagram.
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