A schema describes

  1. Data elements.

  2. Records & files.

  3. Record relationships.

  4. All of these.

  5. None of these.


Correct Option: D

AI Explanation

To answer this question, you need to understand what a schema is in the context of databases.

A schema is a blueprint or structure that describes how data is organized in a database. It specifies the data elements, the relationships between these elements, and the organization of records and files.

Let's go through each option to understand why it is correct or incorrect:

Option A) Data elements - This option is correct because a schema describes the data elements present in a database.

Option B) Records & files - This option is correct because a schema describes the organization of records and files in a database.

Option C) Record relationships - This option is correct because a schema describes the relationships between records in a database.

Option D) All of these - This option is correct because a schema describes all of the above-mentioned aspects: data elements, records and files, and record relationships.

Option E) None of these - This option is incorrect because a schema does describe data elements, records and files, and record relationships.

The correct answer is D) All of these. This option is correct because a schema describes data elements, records and files, and record relationships in a database.

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