Anonymous Asked in Cars &Transportation · 2 weeks ago

Which type of command is ALTER?

1. ALTER Command : ALTER SQL command is a DDL (Data Definition Language) statement. ALTER is used to update the structure of the table in the database (like add, delete, modify the attributes of the tables in the database). 14 авг. 2020 г.


Is ALTER a DDL command?

DDL - which stands for Data Definition Language which comprises SQL commands used for defining the database which includes creating tables, providing specifications, modifying tables and so on. Examples of DDL include CREATE , DROP , ALTER , etc.

Is ALTER a DDL or DML?

DDL is Data Definition Language which is used to define data structures. For example: create table, alter table are instructions in SQL. ... Difference between DDL and DML:DDLDMLBasic command present in DDL are CREATE, DROP, RENAME, ALTER etc.BASIC command present in DML are UPDATE, INSERT, MERGE etc.

Which command is ALTER?

The ALTER command is a DDL command to modify the structure of existing tables in the database by adding, modifying, renaming, or dropping columns and constraints. You can add columns, rename columns, delete columns, or change the data type of columns using the ALTER command.

Is ALTER a DML command?

I was going through the different commands in SQL and I came across alter command which is referred as DDL (Data Definition Language). We can alter the column and values in it, so we can manipulate the data with this command so why does alter command is not referred as DML (Data Manipulation Language).

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