August 2009
Intermediate to advanced
893 pages
26h 48m
English
Content preview from Database Systems: Concepts, Design and Applications
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State True/False
| 1. | In 1980 Dr. E. F. Codd was working with Oracle Corporation. |
| 2. | DB2, System R, and ORACLE are examples of relational DBMS. |
| 3. | In the RDBMS terminology, a table is called a relation. |
| 4. | The relational model is based on the core concept of relation. |
| 5. | Cardinality of a table means the number of columns in the table. |
| 6. | In the RDBMS terminology, an attributes means a column or a field. |
| 7. | A domain is a set of atomic values. |
| 8. | Data values are assumed to be atomic, which means that they have no internal structure as far as the model is concerned. |
| 9. | A table cannot have more than one attribute, which can uniquely identify the rows. |
| 10. | A candidate key is an attribute that can uniquely identify a row in a table. |
| 11. | A table can have only one ... |