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Questions and Answers
What is the main purpose of database normalization?
What is the main purpose of database normalization?
- To increase data anomalies
- To complicate the database structure
- To reduce data redundancy and improve data integrity (correct)
- To speed up data retrieval
Which normal form deals with the removal of transitive dependencies?
Which normal form deals with the removal of transitive dependencies?
- 1st Normal Form (1NF)
- 3rd Normal Form (3NF) (correct)
- Boyce-Codd Normal Form (BCNF)
- 2nd Normal Form (2NF)
What is the purpose of DML in a database?
What is the purpose of DML in a database?
- To control access to the database
- To design the user interface for the database
- To define the structure of the database
- To manipulate data in the database (correct)
Which normal form deals with the removal of partial dependencies?
Which normal form deals with the removal of partial dependencies?
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What is the main drawback of data redundancy in a database?
What is the main drawback of data redundancy in a database?
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Which DML operation is used to remove existing data from a database table?
Which DML operation is used to remove existing data from a database table?
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