If you have a previous version of the product, review the following information.
You can update Version 2.1 Version 7.5, 7.5.1, or 7.5.1.1 of Rational® Data Architect or InfoSphere™ Data Architect to the current version by using the Update wizard in Installation Manager.
Earlier versions of this product can coexist on the same computer, but you cannot update them to the current version by using the Update wizard and you cannot install them into the same package group.