> ALTER TABLE TABLENAME DROP FOREIGN KEY FOREIGNKEY_NAME >ALTER TABLE TABLENAME1 ADD FOREIGN KEY (COLUMN1) REFERENCES TABLENAME2(COLUMN2) ĭeletes an existing foreign key in an already existing table. >ALTER TABLE TABLENAME DROP COLUMN COLUMNNAME Īlters an existing column in an already existing table.Īlters or adds primary key to an existing table.ĭrops an existing primary key in a table.Ĭreates a foreign key on an existing table. >ALTER TABLE TABLENAME ADD COLUMNNAME DATATYPE Shows all tables within the current database.Ĭreates a new table in the current database. >ALTER DATABASE ALTEROPTION Īllow you to use a particular database or change from the current database to another database. To delete an existing database permanently.Ĭhanges or modifies the characteristics of an existing database. Shows all the databases available in MySQL server.Ĭreates a new database if it does not exist. MYSQL DATABASE COMMANDS (DATA DEFINITION LANGUAGE DDL) COMMAND >MYSQLDUMP -U USERNAME -P DATABASENAME> DATABASENAME_BACKUP.SQLĢ. >REVOKE ALL PRIVILEGES, GRANT OPTION FROM a backup of a set of SQL statements that can be used to recreate the original database object definitions and table data. Revokes all privileges assigned to a MySQL user * TO grantsĭisplays the privileges that are assigned to a MySQL user Shows all user who have access to the MySQL Client >CREATE USER IDENTIFIED BY `NEW_PASSWORD` For distros that use dnf, run : sudo dnf install mysql-shell.For distros that use yum, run : sudo yum install mysql-shell.For distros that use apt (Debian based) run: sudo apt install mysql-server.This setup installs multiple MySQL products and the MySQL server is one of them. Execute the installer with administrator privileges. Download the MYSQL installer from here: Install MySQL Installer.We have made a cheat sheet, which will help you navigate and interact with MySQL. It also provides high performance, high flexibility, and high productivity. Transactions can be committed, rolled back and provides crash recovery. We can also implement a client /server architecture in MySQL. MySQL is password encrypted which implies it is secure and lightweight. MySQL is a component of this software stack. Django Stack uses JS, Python, Django, and MySQL. LAMP is an acronym for Linux, Apache, MySQL, PHP/Python, and Perl/Python.LEMP is a stack which uses Linux, Nginx Server, MySQL, and PHP. MySQL has stand-alone users that can interact with a MySQL database using SQL, but in more frequent instances, MySQL is used with other programs to create applications that require relational database expertise. Sun Microsystems (now Oracle Corporation) acquired MySQL AB, the Swedish company that owned and sponsored MySQL. SQL is largely based on Relational Algebra and Tuple Relational Calculus. It can be easily used in both small-scale and large-scale businesses. SQL includes data query, data manipulation (insert, update, and delete), data definition (schema creation and modification), and data access control. SQL is a large group of statements that may be classified as sublanguages, typically: a data query language (DQL), a data definition language (DDL), a data control language (DCL), and a data manipulation language (DML). With only a few SQL statements, we can interact with MySQL using a simple programming language. It uses Structured Query Language (SQL) to manage the database. MySQL is a fully open-source Relational Database Management System.
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