Question: Consider the relational database represented by the ER diagram in Question 3 and the datasheets in Question 4. Explain how the following data are retrieved

Consider the relational database represented by the ER diagram in Question 3 and the datasheets in Question 4. Explain how the following data are retrieved from the relational database in step-by-step, be specific by showing the data. d) What is the sales figure of ThinkPC at Cathy’s branch on 03/12/2012

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