What is database instance?

What is database instance with example?

While the database includes the application data and metadata stored in physical files on a server, an instance is a combination of the software and memory used to access that data. For example, if you sign in to an Oracle database, your login session is an instance.

What is difference between database and instance?

Database Versus Instance The database is the data on disk, stored in operating system files (or possibly, under Unix, in raw files). The instance is composed of the System Global Area (SGA) memory and the background processes. The instance is STARTed using Oracle Server Manager or Oracle Enterprise Manager (OEM).

What is the instance for database table?

An instance is also called a current state or database state. The database schema that defines variables in tables which belong to a specific database, the records of these variables at a particular moment are called the instance of the database.

WHAT IS instance and database in SQL?

Definition. An instance is a copy of the sqlservr.exe executable that runs as an operating system service. A database is a collection of tables that stores a specific set of structured data. Thus, these definitions contain the main difference between instance and database in SQL server.