Multi-write Databases and Extracts

In previous versions, AVEVA databases could be either UPDATE (single user) or MULTIWRITE (multiple concurrent users).

Note:
We recommend that the user community upgrade all UPDATE databases to MULTIWRITE because it is planned to retire UPDATE databases.

Until UPDATE databases are retired, the user interface and command line prevent the creation of new UPDATE databases. If a project that contains an UPDATE database, this warning is displayed:

Simple multi-write databases are described in Simple Multi-write Databases. However, much more sophisticated multi-write facilities are available using database extracts. Refer to Simple Multi-write Databases which applies to all multi-write databases. For more information about extracts, refer to Extracts.