Difference Between Ddl And Dml In Dbms
"Understanding the Difference Between DDL and DML in DBMS"
Difference Between Ddl And Dml In Dbms
In database management systems (DBMS), Data Definition Language (DDL) is used to define the structure of the database schema, such as creating or altering tables, views, indexes, and constraints. DDL commands in SQL include CREATE, ALTER, and DROP statements. On the other hand, Data Manipulation Language (DML) is used to interact with the data stored in the database, such as inserting, updating, deleting, and querying data. DML commands in SQL include SELECT, INSERT, UPDATE, and DELETE statements. In summary, DDL focuses on defining the database structure, while DML focuses on manipulating the data within the database.
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1 - DDL (Data Definition Language) and DML (Data Manipulation Language) are two types of SQL commands in a DBMS such as Oracle or MySQL.
2) DDL is used to define the database structure and schema, including creating, altering, and dropping tables, indexes, constraints, etc. It deals with how data is organized in the database.
3) On the other hand, DML is used to manage the data within the database, including operations like inserting, updating, deleting, and retrieving data from tables.
4) DDL commands include CREATE, ALTER, DROP, TRUNCATE, etc., which are used to define the database structure.
5) DML commands consist of SELECT, INSERT, UPDATE, DELETE, which are used to manipulate the data stored in the database.
6) DDL commands do not require a COMMIT statement to be saved permanently, as these changes are automatically committed to the database.
7) In contrast, DML commands need a COMMIT statement to save the changes permanently to the database.
8) DDL commands can change the structure of the database itself, such as adding new tables or modifying data types.
9) DML commands only affect the data stored in the tables, not the structure of the tables or database.
10) Understanding the difference between DDL and DML commands is essential for database administrators, developers, and anyone dealing with databases to effectively manage and maintain the database.
Based on this information, offering a training program to students that covers DDL and DML commands in a practical and hands on manner would be beneficial for them to develop a strong foundation in working with databases effectively. The training program could include interactive sessions, real world examples, and exercises to help students grasp the concepts and apply them in database management tasks.
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