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What is an instance in SQL database?
Contents
- What is an instance in a database?
- What is a SQL instance vs database?
- What is an instance on a server?
What is an instance in a database?
A database instance is a set of memory structures that manage database files. A database is a set of physical files on disk created by the CREATE DATABASE statement. The instance manages its associated data and serves the users of the database.
What is a SQL instance vs database?
The main difference between instance and database in SQL server is that an instance is a copy of the sqlservr.exe executable, which runs as an operating system service while a database is a systematic collection of data that stores data in tables.
What is an instance on a server?
An instance is a single copy of the software running on a single physical or virtual server. If you run two copies of the software on the same physical or virtual server, that counts as two instances.
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