Consider the following relations for a database that keeps track of student enrollment in courses and the books adopted for each course: STUDENT(SSN, Name, Major, Bdate) COURSE(Course#, Cname, Dept) ENROLL(SSN, Course#, Quarter, Grade) BOOK ADOPTION(Course#, Quarter, Book_ISBN) TEXT(Book ISBN, Book Title, Publisher, Author) Draw a relational schema diagram specifying the foreign keys for this schema.

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A: here we have mentioned few drawbacks of file processing system.

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A: Hi. Check below for the table operation code.

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Q: What is "file handling" and why is it needed? Please describe in detail.

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Q: What is the magic number that identifies Java class files?

A: The answer is given below step.

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.