2. Given the following recursive algorithm: procedure sum(x, y) Input: x: nonnegative integer, y: nonnegative integer Output: x+y: nonnegative integer if y--0 then return x else return sum(x, y-1) + 1 Prove that sum(x, y) returns x+y for any nonnegative integers x and y.

In SQL, you use the __ statement to retrieve the rows in a table. Question 7 options: SELECT FROM WHERE QUERY

When should single quotation marks be used in a WHERE clause?

Solve this (SQL)

Database sql 1-Write the syntax to create an object table called people using people_type

31 Refer to the given SQL statement. SELECT PRODNUM, PRODNAME FROM PRODUCT: Which line designates a product number of at least 300 when added to the end of this statement? O WHERE PRODNUM>=300 WHERE PRODNUM=300+ O WHERE PRODNUM=(300; unlimited) WHERE PRODNUM=>300

What’s the effect of using the NOT operator in a WHERE clause?