Which of the following about delete command in SQL is?
The Delete command in SQL is a part of the Data Manipulation Language, a sub-language of SQL that allows modification of data in databases. This command is used to delete existing records from a table. Using this, you can either delete specific records based on a condition or all the records from a table.
Which of the following is not a command is SQL?
Which of the following is not a type of SQL statement? Explanation: Data Communication Language (DCL) is not a type of SQL statement.
Which SQL command is used to delete a table?
The drop table command is used to delete a table and all rows in the table. To delete an entire table including all of its rows, issue the drop table command followed by the tablename. drop table is different from deleting all of the records in the table.
Which of the following is not correct for delete and truncate?
DELETE table can be rolled back. TRUNCATE table cannot have triggers. TRUNCATE table can have criteria.
What is the meaning of Delete Delete?
transitive verb. : to eliminate especially by blotting out, cutting out, or erasing delete a passage in a manuscript delete a computer file The email was accidentally deleted. Other Words from delete Synonyms More Example Sentences Learn More About delete.
How many types of delete are there?
On desktop computer keyboards, there are two delete keys on the keyboard. On laptop computers with no numeric keypad, there is only one delete key on the keyboard. If you have a Chromebook, there are no delete keys.
What is delete command example?
Difference Between TRUNCATE And DELETE Statements
|1||It’s a DML (Data Manipulation Language).|
|2||Any AFTER DELETE trigger on the table gets activated when we use DELETE command.|
|3||A record can be deleted even if there are any foreign key constraints.|
|4||Table re-initialization will not happen.|
What is the delete command?
The DELETE command is used to delete specified rows(one or more). While this command is used to delete all the rows from a table. 2. It is a DML(Data Manipulation Language) command.
Which of the following is used to delete an entire My SQL database?
Explanation: The ‘TRUNCATE’ keyword in MySQL is used to delete all the rows from the table and also free the space containing the table.
How do you delete a database?
To delete a database
Expand Databases, right-click the database to delete, and then click Delete. Confirm the correct database is selected, and then click OK.
Which of the following is a SQL command?
There are five types of SQL commands: DDL, DML, DCL, TCL, and DQL.
Which command is used to delete a database?
Drop database database_name command is used to delete a database.
Which command is used to delete any table?
We use the SQL DROP Table command to drop a table from the database. It completely removes the table structure and associated indexes, statistics, permissions, triggers and constraints.
Which command delete the structure of table?
The SQL DROP command is used to remove an object from the database. If you drop a table, all the rows in the table is deleted and the table structure is removed from the database.