Database [Oracle]

A database is a set of files:

• datafiles,
• control files,
• online redo logs,
• init.ora or spfile,
• password file (optional)

These files either store application data (those that is entered with DML) or are used by the instance to store information that the instance needs to operate.

A database is identified by its database name.

instance.

Difference between a database and an instance.

v$database.