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JAVA
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Data Structure
Table Queries
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Q1.

Which SQL command is used to create a new table?
A. INSERT
B. CREATE
C. ALTER
D. UPDATE

Q2.

Which command is used to modify an existing table structure?
A. MODIFY
B. CHANGE
C. ALTER
D. UPDATE

Q3.

Which SQL command deletes a table permanently?
A. DELETE
B. TRUNCATE
C. DROP
D. REMOVE

Q4.

Which command removes all records but keeps the table?
A. DELETE
B. DROP
C. TRUNCATE
D. CLEAR

Q5.

Which constraint ensures unique values in a column?
A. FOREIGN KEY
B. UNIQUE
C. PRIMARY KEY
D. CHECK