Which of the following is used in the application programs to request ...
Data Manipulation Language (DML)
Data Manipulation Language (DML) is used in application programs to retrieve and manipulate data from a database management system (DBMS). It is a subset of SQL (Structured Query Language) that allows users to perform various operations on the data stored in a database.
Key Points:
- DML is primarily concerned with the manipulation of data within the database.
- It allows users to retrieve, insert, update, and delete data from the database.
- DML statements are used to query the database and retrieve specific data based on certain conditions.
- These statements are also used to add new data to the database, modify existing data, and delete unwanted data.
- DML statements include SELECT, INSERT, UPDATE, and DELETE.
Example:
Let's consider an example of a simple application program that interacts with a database. Suppose we have a database table named "Employees" with columns like "ID," "Name," "Age," and "Salary." The application program may need to retrieve the names of all employees whose age is above 30. In this case, the program would use a SELECT statement, which is a DML statement, to request the required data from the database management system.
Conclusion:
In conclusion, DML is the subset of SQL used in application programs to request data from a database management system. It allows users to retrieve, insert, update, and delete data from the database. Other options like Data Definition Language (DDL) and Data Control Language (DCL) have different purposes. DDL is used to define the structure of the database, while DCL is used to control access and permissions to the database. Therefore, the correct answer is option 'A' - Data Manipulation Language.
Which of the following is used in the application programs to request ...
To fetch data from the database management system, generally, the "select" statement is used. Therefore, the Data Manipulation Language is used in the application programs while requesting the data from the database management system.
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