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.