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Database Management SystemConstruct an *E-R diagram* for a university registrar's office. The office maintains data about each class, including the instructor, the enrollment, and the time and place of the class meetings. For each class pair, a grade is recorded. Document all assumptions that you make about the mapping constraints.202014mDatabase Management SystemWrite a short note on types of attributes and their representation in E-R model with neat figures.20194mDatabase Management SystemList out various constraints in relational model and explain in short.20195mSoftware EngineeringDraw the context diagram and Level-1 DFD for the following Mail Order Processing System. "HMV Records is a mail-order company that distributes CDs and tapes at discounted prices to record-club members. When an order processing clerk receives an order form, he verifies that the sender is a club member by checking the member file. If the sender is not a member, the clerk returns the order along with a membership application form. If the customer is a member, the clerk verifies the order item data by checking the Item file. Then the clerk enters the order data and saves it to the Daily Order file. The clerk also prints an invoice and shipping list for each order, which are forwarded to order fulfilment section."20247m
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