Indexes may be created or dropped at any time.
A. True
B. False
Answer: Option A
Solution (By Examveda Team)
Indexes in SQL can indeed be created or dropped at any time during the lifecycle of a database. Indexes are used to improve the speed of data retrieval operations by providing quick access paths to data based on the indexed columns. They can be added to speed up queries or removed if they are no longer necessary or if they degrade performance for certain operations.Conclusion:
The statement "Indexes may be created or dropped at any time" is Option A: True. Hence, the correct answer is True.
This Question Belongs to Database >> Introduction To SQL
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
Join The Discussion