Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value.
A. True
B. False
Answer: Option A
Solution (By Examveda Team)
Option A: True - Indexes in a database do consume extra storage space because they are separate data structures that store indexed column values for quick retrieval. Additionally, whenever data in the indexed columns change, the index needs to be updated, which adds overhead maintenance time.Conclusion:
The statement "Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value" is Option A: True. Therefore, the correct answer is True.
Related Questions on Introduction to SQL
You can add a row using SQL in a database with which of the following?
A. ADD
B. CREATE
C. INSERT
D. MAKE
The command to remove rows from a table 'CUSTOMER' is:
A. REMOVE FROM CUSTOMER ...
B. DROP FROM CUSTOMER ...
C. DELETE FROM CUSTOMER WHERE ...
D. UPDATE FROM CUSTOMER ...
A. limits the column data that are returned.
B. limits the row data are returned.
C. Both A and B are correct.
D. Neither A nor B are correct.
Which of the following is the original purpose of SQL?
A. To specify the syntax and semantics of SQL data definition language
B. To specify the syntax and semantics of SQL manipulation language
C. To define the data structures
D. All of the above

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