If you already have Rational® DOORS® installed on your system,
the Rational DOORS installers will upgrade your system to
9.3.
Rational DOORS version 9.3 and 9.0, 9.1, and 9.2
When you upgrade from Rational DOORS version 9.0, 9.1, or 9.2
to 9.3, the previous version is removed. This topic contains information
about how version 9.0, 9.1, 9.2, and 9.3 database servers and clients
interact.
Rational DOORS 9.3 and version 7 and 8
When you upgrade from Rational DOORS version 7 or 8 to 9.3, the
previous version is retained on your system. This topic contains information
about upgrading from version 7 or 8 to 9.3.