CSEN 5314 Quiz 3.

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Presentation transcript:

CSEN 5314 Quiz 3

1. In the relational model, relationships between relations or tables are created by using: A. composite keys. B. determinants. C. candidate keys. D. foreign keys. 2. What is an SQL virtual table that is constructed from other tables? A. Just another table B. A view C. A relation D. Query results 3. What SQL structure is used to limit column values of a table? A. The LIMIT constraint B. The CHECK constraint C. The VALUE constraint D. None of the above is correct. True/False? 4. The Delete Operation can violate only referential integrity constraints 5. Entity integrity constraint means 'No primary key value can be NULL'

1. In the relational model, relationships between relations or tables are created by using: A. composite keys. B. determinants. C. candidate keys. D. foreign keys. 2. What is an SQL virtual table that is constructed from other tables? A. Just another table B. A view C. A relation D. Query results 3. What SQL structure is used to limit column values of a table? A. The LIMIT constraint B. The CHECK constraint C. The VALUE constraint D. None of the above is correct. True/False? 4. The Delete Operation can violate only referential integrity constraints. True 5. Entity integrity constraint means 'No primary key value can be NULL‘ True