What are the three main components of the conceptual schema?

What are the 3 types of schemas?

Schema is of three types: Logical Schema, Physical Schema and view Schema.Logical Schema – It describes the database designed at logical level.Physical Schema – It describes the database designed at physical level.View Schema – It defines the design of the database at the view level.Difference between Schema and Instance in DBMS - GeeksforGeeks

What is conceptual schema in database?

A conceptual schema is a high-level description of informational needs underlying the design of a database. It typically includes only the main concepts and the main relationships among them. Typically this is a first-cut model, with insufficient detail to build an actual database.

What is the three schema architecture?

Three-schema architecture is an idea in relational database design that breaks a database down into three different categories according to its use and structure, and to the roles played by system administrators, designers and end users.

What are the three objectives of schema architecture?

Objectives of Three schema Architecture. The main objective of three level architecture is to enable multiple users to access the same data with a personalized view while storing the underlying data only once. Thus it separates the user's view from the physical structure of the database.