MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Rdbms knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is a good database management practice? |
| A. | tAdding redundant attributes |
| B. | tRemoving redundant attributes |
| C. | tNot specifying primary keys |
| D. | tNone of the mentioned |
| Answer» C. tNot specifying primary keys | |
| 2. |
State true or false: Multiple attributes combined together can be primary keys |
| A. | tTrue |
| B. | tFalse |
| Answer» B. tFalse | |
| 3. |
Let E be an entity set in a relationship set R. If only some entities in E participate in relationships in R, Then the participation of E in R is __________ |
| A. | tPartial |
| B. | tTotal |
| C. | tComplete |
| D. | tIncomplete |
| Answer» C. tComplete | |
| 4. |
Let E be an entity set in a relationship set R. If every entity in E participates in at least one relationships in R, Then the participation of E in R is __________ |
| A. | tPartial |
| B. | tTotal |
| C. | tComplete |
| D. | tIncomplete |
| Answer» C. tComplete | |
| 5. |
The _________ of the entity set is an actual collection of entities belonging to that entity set. |
| A. | tExtension |
| B. | tIntention |
| C. | tDescription |
| D. | tAvailability |
| Answer» B. tIntention | |