What is SQL - SQL stands for Structured Query Language. SQL or also often referred to as a query is a language used to access the database. SQL was first introduced in IBM in 1970 and an ISO and ANSII standard is set for SQL. This standard does not depend on the machine used (IBM, Microsoft or Oracle). Almost all database software knows or understands SQL. So, the SQL command on all database software is almost the same.
There are 2 (two) types of SQL commands, namely:
1. DDL or Data Definition Language
DDL is a SQL command that deals with defining a database structure, in this case the database and table. Some basic commands that include DDL include:
DML is a SQL command that deals with manipulation or processing of data or records in a table. The SQL commands included in the DML include:
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What is SQL |
There are 2 (two) types of SQL commands, namely:
1. DDL or Data Definition Language
DDL is a SQL command that deals with defining a database structure, in this case the database and table. Some basic commands that include DDL include:
- CREATE
- ALTER
- RENAME
- DROP
DML is a SQL command that deals with manipulation or processing of data or records in a table. The SQL commands included in the DML include:
- SELECT
- INSERT
- UPDATE
- DELETE
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