The Oracle environment of database is called as:

Correct option is D

A database schema refers to the structure of a database system in Oracle, which includes the organization of data as tables, views, relationships, indexes, and other elements. It defines how the data is stored, accessed, and managed within the database environment.
Important Key Points:
1. Definition of Schema: A schema acts as a blueprint of the database, describing its structure and the relationships among the entities.
2. Oracle Usage: In Oracle databases, schemas group logical database objects like tables, views, and stored procedures under a single user.
3. Purpose: Ensures consistency and standardization of data organization.
Knowledge Booster:
· Data Types: Define the type of data (e.g., integer, text) that a column in a table can hold.
· Data Structure: Refers to the organization of data in memory, not specific to Oracle databases.
· Database Instances: Represent the set of processes and memory structures that allow access to database files.
· Data Values: Refers to the actual content stored within database tables.