What is the difference between database schema and instance?

What is the difference between schema and instance explain with example?

The database schema defines the variable declarations in tables and the values of these variables at a specific time are called the instance of the database. For example, assume that there are 100 records in the employee table of the database. So, the instance of the database has 100 records.

What is the difference between DB and instance?

Basically, a database is what's written in physical files on disk, while an instance is what runs in memory on a specific computer at a specific time. Your database instance exists only temporarily - it will disappear completely if you shut down your computer, stop the related service or detach the database.

What is database schema and instance in DBMS?

DBMS Instance. 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 a database schema?

A database schema defines how data is organized within a relational database; this is inclusive of logical constraints such as, table names, fields, data types, and the relationships between these entities.