ct answerUsing which language can a user request information from a database ?OptionsRelationalQueryCompilerStructural

The language that a user can use to request information from a database is Query language. The most common example of a query language is SQL (Structured Query Language), which is specifically designed for managing and manipulating relational databases.

Explanation:

1. Relational: This refers to the type of database that organizes data into tables. While relational databases use query languages, the term "relational" itself does not denote a language.

2. Query: This term directly relates to asking questions or fetching data from a database. "Query language" is the correct terminology as it encompasses languages like SQL that are specifically tailored for this purpose.

3. Compiler: This term refers to a program that converts code written in one programming language into another language. It does not relate directly to requesting information from a database.

4. Structural: While databases do have structural features, this term is too vague and does not refer specifically to a language used for querying.

In summary, the correct answer is Query. It is the category designating languages used to retrieve and manipulate data in databases.