Which of the following is valid SQL for an Index?
A. CREATE INDEX ID;
B. CHANGE INDEX ID;
C. ADD INDEX ID;
D. REMOVE INDEX ID;
Answer: Option A
Solution (By Examveda Team)
Option A: CREATE INDEX ID; - This option is correct. The CREATE INDEX statement in SQL is used to create an index on a table.Option B: CHANGE INDEX ID; - There is no standard SQL command called CHANGE INDEX. This option is incorrect.
Option C: ADD INDEX ID; - There is no standard SQL command called ADD INDEX. This option is incorrect.
Option D: REMOVE INDEX ID; - There is no standard SQL command called REMOVE INDEX. This option is incorrect.
Conclusion:
In SQL, to create an index on a table, you use the CREATE INDEX statement followed by the index name. Therefore, the correct answer is Option A: CREATE INDEX ID;.
This Question Belongs to Database >> 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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