MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

SQL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does DROP means?
A
rearrange
B
delete
C
sort
D
filter
Explanation: 

Detailed explanation-1: -The DELETE command deletes one or more existing records from the table in the database. The DROP Command drops the complete table from the database. The TRUNCATE Command deletes all the rows from the existing table, leaving the row with the column names.

Detailed explanation-2: -It’s faster than DELETE . To remove an entire table, including its structure and data, use DROP TABLE .

Detailed explanation-3: -DROP is a Data Definition Language (DDL) command which removes the named elements of the schema like relations, domains or constraints and you can also remove an entire schema using DROP command.

Detailed explanation-4: -DROP Vs. TRUNCATE: Explore the Major Differences between DROP and TRUNCATE. In SQL, the DROP command is used to remove the whole database or table indexes, data, and more. Whereas the TRUNCATE command is used to remove all the rows from the table.

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