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QUESTION 5 [15 MARKS] Consider the following Sales Order schema in Figure 2, which stores information about sales order, the customer and the supplier: Salesacdeci
QUESTION 5 [15 MARKS] Consider the following Sales Order schema in Figure 2, which stores information about sales order, the customer and the supplier: Salesacdeci customecin customerName. customerAddress customecebapellum supplier supplier Name supplierAddress supplierphone total sales amount placeorder.date. salesorder date interest amount paid installment. date.paid installment.) ): PKcustomecid supplierid, date.place.order) Figure 2 Note that the date when an order is placed is required to identify the sales order (ie., it is part of the primary key). Also note that sales order amount can be paid in installments (1.e., partial payments distributed over a period of time), with interest being charged. (a) Based on the knowledge of normalization theory, briefly discuss why the design that led to this table is flawed, and give at least TWO (2) examples of anomalies that may result from it, Explain your examples. [5 Marks] (6) For schema in Figure 2: i. Identify partial and transitive dependencies . Then normalize it step-by-step up to 3NF. [3 Marks] [7 Marks]
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