Answer these question bellows. 1. For each of the following statements regarding primary keys, select Yes if the statement is true and No if the statement is false. a. A "unique constraint" is the same as a primary (NO) key. b. An example of a primary key would be a user(YES) ID. c. Relationships between tables are stored as foreign key constraints. (YES) 2. A view named potential_customers is no longer needed in a database named WaterWorks. Which SQL statement will remove the view from the database without removing any of the underlying data the view shows? A. DELETE potential_customers B. DROP VIEW potential_customers C. DELETE VIEW potential_customers D. DROP potential_customers 3. A database builder wants to allow only two values in an Active field in a Customers table, with the possible values set to 0 or 1 to represent inactive or active. Which statement, as part of a CREATE TABLE statement, should be used to set the data type to only allows these two values for the field? A. Active INT B. Active BIT C. Active CHECK D. Active VARCHAR(1) 4. For each of the following statements, select Yes if the statement is true and No if it is not. a. Char(size) holds a fixed-length string. (YES) b. Text holds a fixed-length string. (NO) c. Varchar(size) can hold a string of differing lengths. (YES) 5. The alpha team no longer needs permissions to update the employees table in a database. Which SQL statement will remove those permissions? A. REVOKE UPDATE ON OBJECT :: employees FROM alpha B. DELETE UPDATE ON OBJECT :: employees FROM alpha C. REVOKE UPDATE FROM USER:: alpha ON employees D. DELETE UPDATE FROM USER :: alpha ON employees