The correct answer is D) all of the options.

Why All of the Options (Data Definition Language, Data Manipulation Language, and Data Query Language) are Database Languages:

Database languages are specialized programming languages used for managing and interacting with databases. These languages facilitate various tasks related to database management, data manipulation, and querying. Here’s a detailed explanation of why all the provided options are considered database languages:

A. Data Definition Language (DDL):

DDL is a subset of SQL (Structured Query Language) used to define, modify, and manage the structure of a database. It includes commands such as CREATE, ALTER, and DROP, which are used to create and modify database objects like tables, indexes, and constraints. DDL is essential for specifying the schema of a database, including the tables’ structure, data types, and relationships.

B. Data Manipulation Language (DML):

DML is another subset of SQL used to manipulate data stored in a database. DML commands, such as SELECT, INSERT, UPDATE, and DELETE, enable users to retrieve, add, modify, and remove data from database tables. DML is crucial for interacting with the data within the database and performing operations like adding new records, updating existing ones, or retrieving specific data sets.

C. Data Query Language (DQL):

DQL is an essential component of SQL that focuses specifically on querying and retrieving data from a database. The primary DQL command is SELECT, which allows users to specify the data they want to retrieve, apply filters, and sort results. DQL is at the core of database querying, enabling users to extract valuable information from databases by specifying criteria and conditions.

Why the Other Options are Not Correct:

A. Data Definition Language (DDL) (Individually):

DDL is indeed a database language used for defining and managing the structure of a database. However, it represents only one aspect of database languages. Therefore, “all of the options” is the correct choice because it encompasses DDL along with other essential database languages.

B. Data Manipulation Language (DML) (Individually):

DML is another crucial aspect of database languages, specifically focused on data manipulation operations. While it is a fundamental part of database languages, it is not the only aspect. Again, “all of the options” correctly acknowledges the presence of DML along with other database languages.

C. Data Query Language (DQL) (Individually):

DQL, like DDL and DML, is an integral part of database languages, primarily focused on querying and retrieving data. However, it is not the sole representation of database languages. Therefore, “all of the options” is the correct choice as it recognizes the existence of DQL along with other essential components of database languages.

In summary, database languages encompass a range of functionalities, including defining the database structure (DDL), manipulating data (DML), and querying data (DQL). Each of these aspects plays a crucial role in managing and interacting with databases.

Therefore, “all of the options” accurately reflects the comprehensive nature of database languages, which collectively enable users to define, manipulate, and query data within a database management system.