Views, Synonyms, and Sequences Data Dictionary Views

The following views display information about views, synonyms, and sequences:

View	Description
`DBA_VIEWS` `ALL_VIEWS` `USER_VIEWS`	`DBA` view describes all views in the database. `ALL` view is restricted to views accessible to the current user. `USER` view is restricted to views owned by the current user.
`DBA_SYNONYMS` `ALL_SYNONYMS` `USER_SYNONYMS`	These views describe synonyms.
`DBA_SEQUENCES` `ALL_SEQUENCES` `USER_SEQUENCES`	These views describe sequences.
`DBA_UPDATABLE_COLUMNS` `ALL_UPDATABLE_COLUMNS` `USER_UPDATABLE_COLUMNS`	These views describe all columns in join views that are updatable.