What's A Database Instance?

The database instance refers to a complete database environment. It includes RDBMS software, table structure, stored procedures and other functions. It is normally used when administrators tend to describe multiple instances of the same database. It is also called as environment in technical terms. You can better understand its workings with the help of an example. The example is of an organixation that has an employee database. This database will have three instances, which are
- Production That is used for storing live data
- pre-production which is used to test new functionality prior to release for production
- development which is used by database developers in order to create new functionality

Instance is one of the main component of database.The instance describes the complete database environment.The user commands and built in functions are all the instances of database.