Problem 1: T/F (20 points) 1. A deletion anomaly occurs when you delete a record that may contain attributes that should be deleted. 2. The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions. 3. From A -> B, we can derive AC -> BC, which can further lead to A ->BC. 4. We use the IS keyword to compare with NULL values. 5. Select * is used to retrieve all the data inside a table. 6. In SQL, an aggregate function is a mathematical library that contains functions like sum, min, power, sqrt. 7. If A->B is a functional dependency, then if we know the value of B we can determine the value of A. 8. In a grouping SQL query, the WHERE condition is applied before the grouping of records but the HAVING condition is applied after the forming of groups. 9. The primary key for a record must never be allowed to have a NULL value. 10.A join can be used only once in a query