NABTEB Computer Studies 2024 Objective — Question 38
Question 38 of 50 from the National Business and Technical Examinations Board (NABTEB) Computer Studies 2024 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about index is true? It is a data structure
- A. A. that reduces the speed of data retrieval operations on a database table
- B. B. used to quickly locate data without searching every row in a table every time a database table is accessedCorrect
- C. C. created using only two rows of a database table to uniquely identify each record
- D. D. that allows relational database to split and store data in different tables, while linking disparate items
Explanation
An index is a data structure that improves the speed of data retrieval by enabling lookup of records based on specific columns or fields.
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