A globally unique identifier for a row in a database. It is created at the time the row is inserted into a table, and destroyed when it is removed from a table.

an identification tag unique for each row of an Oracle database table

a pseudo-column defined in the Oracle database to uniquelly identify a row (an database entry)

a pseudo-column that uniquely identifies a row in a table, but not within a data base

a special value that uniquely identifies each row

An integer that defines the physical location of a row. The database server assigns a unique rowid to each row in a nonfragmented table. If you want to access data in a fragmented table by rowid, you must create a rowid column.