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After the system has authenticated a user's logon data, a user can, within the scope of his or her authorizations, access data in the database and use database tools.

User types:

  • Database system administrator (SYSDBA user)

    The database system administrator has comprehensive authorizations for access to the database and database tools.

  • Database user

    Database users access data in the database using SQL statements. The database user's user class determines what authorizations he or she has.

  • DBM operator

    DBM operators manage databases. The authorizations of a DBM operator are determined by his or her server authorizations.

Hazards
  • Data is read by an unauthorized user

    A user reads confidential data that should only be visible to a restricted group of users.

  • Data is changed by an unauthorized user

    A user changes data that should only be changed by a restricted group of users.

More Information

Database Administration, Managing Users