Database Application Unit 2

Which of the following statements is true?

C. A relational database is a collection of entities
Which of the following statements about functional dependencies is true?

B. Column B is functionally dependent on another column when a value for A determines a single value for B at any one time.
A primary key is ________.

A. a unique identifier of a table
When is a table is in first normal form (1NF)?

D. When a table does not contain repeating group
Which of the following is not an entity?

B. An idea
When is a relation in second normal form (2NF)?

C. It is in first normal form and no nonkey column is dependent on only a portion of the primary key.
Which of the following is not a step of database design?

F. None of the above
Data anomalies are classified into which of the following four categories?

D. Updates, additions, deletions, and inconsistent data
What is an attribute?

D. An attribute is a property of an entity.
What is a relationship?

C. A relationship is an association between two entities.

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Database Application Unit 2

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Updated

2022-06-20T15:39:36Z

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