In this article, we’ve explored the different categories of SQL commands: DDL, DML, DCL, and TCL, and their respective functionalities. Understanding these categories is essential for effectively managing and manipulating databases. With the appropriate commands, we can ensure data integrity, security...
SQL is classified into the following categories. Note that statements mentioned in the following tables may vary in different databases. CommandsDescription DDL Data Definition Language DML Data Manipulation Language TCL Transaction Control Language DCL Data Control Language ...
DELETE:This command is used to delete records from the table. UPDATE:This command is used to update the value of any record in the Database. 3. DCL (Data Control Language) This category of SQL queries deals with the Database’s access rights and permission control. GRANT:This command is ...
CALL - call a PL/SQL or Java subprogram EXPLAIN PLAN - explain access path to data LOCK TABLE - control concurrency DCL Data Control Language (DCL) statements. Some examples: GRANT - gives user's access privileges to database REVOKE - withdraw access privileges given with the GRANT command T...
Beginning with MySQL 8.4.0, the deprecated mysql_native_password authentication plugin is no longer enabled by default. To enable it, start the server with --mysql-native-password=ON (added in MySQL 8.4.0), or by including mysql_native_password=ON in the [mysqld] section of your MySQL co...
More SQL Courses RENAME command: As the name suggests, RENAME command is what you use to rename a table. General syntax: RENAME TABLE {table_name} TO {new table_name}; Example: RENAME TABLE Person TO Workers; You can also “DROP DATABASE” if you want to delete the database itself. ...
“SQL is designed based on relational algebra and tuple relational calculus, SQL consists of many types of statements, which may be informally classed as sublanguages, commonly: a data query language (DQL),[a] a data definition language (DDL),[b] a data control language (DCL), and a data...
SQL DCL (Data Control Language) commands control access to a database, including privileges on database objects. Common DCL commands are GRANT and REVOKE. SQL DQL (Data Query Language) command allows us to fire queries to the database and get the data from the database. The DQL command i...
Azure SQL DB Auditing allows Users and organizations to track specific database events like (DDL, DML, TCL, DQL,DCL ,Errors etc.) rather than tracking all of the Database default events. This helps ...
Let us take a simple example through below SQL code: CREATE TABLE acidtest (A INTEGER, B INTEGER, CHECK (A + B = 100)); The ACID test table will have two columns – A & B. There is an integrity constraint that the sum of values in A and B should always be 100. ...