Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace.

Each databases logically divided into one or more tablespaces one or more data files are explicitly created for each tablespace.

Oracle stores data logically in tablespaces and physically in datafiles.
Tablespaces
Can belong to only one database at a time.
Consists of one or more datafiles.
Are further divided into logical units of storage.
Datafiles
Can belong to only one tablespace and one database.
Are a repository for schema objects.

A datafile combines and creates the tablespace and the collection of various tablespaces form a database.

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