One RDBMS databases is a pool of data.
It contains
- tables (that have fields)
- indeces
- DB functions, triggers and procedures
- DataBase files
- Database Spaces
- and more
can have functions like
- import
- export
- tune
- and more
can run
- in cluster
- in cloud
- in one server with the app
- in different server from the app
- and more
can be
- distributed
- non distributed
can store
- data
- images
- video
- or links to video and images that are on disk
- and more data types
can have
- disaster clone
- or not
can have
- disk backup
- tape backup
- backup from export
