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Home ‣ Database ‣ The Relational Model and Normalization Comments
- Question
A key is a group of one or more attributes that uniquely identifies a row.
Options- A. True
- B. False
- Correct Answer
- True
- 1. A functional dependency is always an equation.
Options- A. True
- B. False Discuss
- 2. Relations are categorized into normal forms according to the referential integrity constraints that they have.
Options- A. True
- B. False Discuss
- 3. A relation has cells that hold multi-value entries.
Options- A. True
- B. False Discuss
- 4. In a relation, the order of the columns does not matter.
Options- A. True
- B. False Discuss
- 5. In a relation, the rows are sometimes called "records."
Options- A. True
- B. False Discuss
- 6. In a relation, the columns are sometimes called "attributes."
Options- A. True
- B. False Discuss
- 7. An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.
Options- A. True
- B. False Discuss
- 8. When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships.
Options- A. True
- B. False Discuss
- 9. A ternary relationship is so called because in contains two entities and one association between them.
Options- A. True
- B. False Discuss
- 10. In a 1:N relationship, the parent is the entity on the one side of the relationship and the child is the entity on the N side of the relationship.
Options- A. True
- B. False Discuss
The Relational Model and Normalization problems
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