Database, Database instance vs Database Server: difference in all popular rbdms in the market

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Let’s clarify the distinctions between “database,” “database instance,” and “database server” across popular relational database management systems (RDBMS) in the market:

Oracle Database:

1. Database: A collection of data organized into tables, indexes, and other structures, along with associated schema and metadata.
2. Database Instance: The set of memory structures and background processes specific to an Oracle database. Multiple instances can run on a single Oracle Database.
3. Database Server: The physical or virtual machine running the Oracle Database software, which may host one or more database instances.

2. Microsoft SQL Server:

. Database:A logical container for data and database objects within SQL Server.

.Database Instance: A specific installation of SQL Server on a machine, each with its own system databases and configuration. SQL Server supports multiple instances on a single server.

. Database Server: The physical or virtual machine running the SQL Server software, capable of hosting multiple SQL Server instances.

3. MySQL: