What is schema and instance?

WHAT IS instance and schema with example?

Definition of instance: The data stored in database at a particular moment of time is called instance of database. Database schema defines the variable declarations in tables that belong to a particular database; the value of these variables at a moment of time is called the instance of that database.

What is difference between schema and instance?

Schema refers to the overall description of any given database. Instance basically refers to a collection of data and information that the database stores at any particular moment. The schema remains the same for the entire database as a whole.

What is called schema?

The term "schema" refers to the organization of data as a blueprint of how the database is constructed (divided into database tables in the case of relational databases). The formal definition of a database schema is a set of formulas (sentences) called integrity constraints imposed on a database.

What is schema example?

A schema is an outline, diagram, or model. In computing, schemas are often used to describe the structure of different types of data. Two common examples include database and XML schemas.