Database Language for Accessing and Maintaining Data

The correct answer for the given question is option 'D' - None of the above.

Explanation:
Database languages are used to communicate with a database system and perform various operations such as accessing, manipulating, and maintaining data. There are different types of database languages, each with its own purpose and syntax. Let's discuss the three options mentioned in the question and why they are not the correct answer.

1. DCL (Data Control Language):
DCL is a database language used to control database access and permissions. It includes commands such as GRANT and REVOKE, which are used to grant or revoke privileges from users. DCL is not used for accessing or maintaining data in a database, so it is not the correct answer.

2. DML (Data Manipulation Language):
DML is a database language used to manipulate data in a database. It includes commands such as SELECT, INSERT, UPDATE, and DELETE, which are used to retrieve, insert, update, and delete data from database tables. While DML is used to access and manipulate data, it is not specifically designed for maintaining data in a database, so it is not the correct answer.

3. DDL (Data Definition Language):
DDL is a database language used to define and manage the structure of a database. It includes commands such as CREATE, ALTER, and DROP, which are used to create, modify, and delete database objects such as tables, indexes, and views. DDL is not used for accessing or maintaining data within a database, so it is not the correct answer.

Therefore, the correct answer is option 'D' - None of the above. The language that allows you to access or maintain data in a database is commonly known as the Query Language, which is SQL (Structured Query Language). SQL is a standard language for managing relational databases and is used to perform various operations on data, such as querying, inserting, updating, and deleting records. It provides a set of powerful commands and functions to interact with the database and retrieve or modify data as needed.

The correct answer is B: DML (Data Manipulation Language).
Explanation:
DML is a database language that allows users to access or maintain data in a database. It is used to retrieve, insert, update, and delete data in a database. DML statements are used to interact with the data stored in tables within a database. Some examples of DML statements include:
- SELECT: Retrieves data from one or more tables based on specified criteria.
- INSERT: Adds new records or rows into a table.
- UPDATE: Modifies existing records or rows in a table.
- DELETE: Removes records or rows from a table.
DCL (Data Control Language) is not the correct answer because it is used to control access and permissions to the database.
DDL (Data Definition Language) is also not the correct answer because it is used to define and modify the structure of database objects, such as tables, views, indexes, and constraints.
Therefore, the correct answer is B: DML.