Database administrators must know the distinction between DML and DDL statements. Data Manipulation Language (DML) is used to manage data within a database, while Data Definition Language (DDL) is used to define the structure of the database. In this post, we’ll take a look at some of the most common DDL and DML statements.
What is DML?
DML is short for Data Manipulation Language. It’s a family of computer languages including commands for updating, retrieving and deleting data stored in a database. DML is used by database administrators and programmers to perform various tasks, such as: adding new records, changing existing records, deleting records, and more. DML commands are typically divided into four categories: UPDATE, DELETE, INSERT and SELECT. Each category has its own specific syntax and usage rules. DML is essential for keeping a database organized and accurate. Without DML, it would be very difficult to make changes to data or retrieve specific information from a database. Therefore, DML plays an important role in maintaining the functionality of a database.
What is DDL?
DDL, or Data Definition Language, is a standard database language used to define the structure and components of a database. DDL commands are used to create, modify, and delete database objects such as tables, indexes, and users. DDL statements are also used to set permissions and constraints on database objects. DDL is an important part of database administration, as it allows DBAs to control the structure and contents of their databases.
Difference between DML and DDL
DML and DDL are two terms that are often used in the database world. DML stands for Data Manipulation Language. This language is used to modify data in a database. DDL stands for Data Definition Language. This language is used to define the structure of a database. DDL statements are used to create, alter, and drop tables. DML statements are used to insert, update, delete, and select data from a database. DML is a subset of SQL, while DDL is a completely different language. DDL is not part of SQL. SQL is a standard query language that can be used with any relational database management system. DML is specific to the database management system being used. For example, MySQL has its own DML, which is different from the DML of Oracle Database.
Conclusion
In this article, we’ve outlined the key differences between DML and DDL. We hope that after reading this article you have a better understanding of which language to choose for your database needs.
