Unformatted text preview: __ _T _ 9. A column whose value uniquely identifies a given row in the table is the secondary key. ___ T _ 10. A query is a question represented in a way that the DBMS can recognize and process. ___ T _ 11. QBE is a visual approach to writing queries. __ F__ 12. The comparison operators are +, *, %, and /. __ T_ 13. The comparison operators are also known as relational operators. __ T__ 14. In an AND criterion, the overall criterion is true if either of the individual criteria is true. __ _F _ 15. The concept of grouping means that statistics will be calculated for individual records....
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- Spring '10
- Relational Database, Relational model, relation, Redundancy wastes space