Design a query for the supermarket example that will return the total sales (over time) for each supermarket.
What will be an ideal response?
SELECT S.Market_Id, SUM(S.Sales_Amt)
FROM Sales S
GROUP BY S.Market_Id
Computer Science & Information Technology
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A(n) ________ enables individuals to select from a list but does not enable individuals to type anything that is not in the list
Fill in the blank(s) with correct word
Computer Science & Information Technology
If an app needs to perform a derived-class-specific operation on a derived class object reference by a base class variable, the app must first cast the base class reference to a derived class reference through a technique known as _________.
a) downcasting b) upcasting c) decreasecasting d) increasecasting
Computer Science & Information Technology