The HAVING clause is used to filter rows before grouping occurs.

Given the table T: A B C 1 10 100 2 10 10 3 40 100 4 30 200 5 25 90 What is the result of the following query? SELECT sum(C)FROM TGROUP BY BHAVING count(*) >= 2;

A LEFT JOIN returns all rows from the right table and only the matched rows from the left table.

An ERD is used in the physical design of a database.

Consider the following table: Identify the valid functional dependency among the following potential dependencies.

Consider the following schema :  movie(movieid, title) user(userid, username) review(userid, movieid, score) Which SQL query correctly lists the usernames of users who have not reviewed any movies?

The HAVING clause is to groups what the WHERE clause is to rows.  

The Clients table contains 12 records with three distinct values in the Zipcode field. If you create a query that groups the records by Zipcode, how many records will be in the results?

If B is functionally dependent on A, you can also say that B functionally determines A.

An associative entity is used when: