Using the Designer Screen –Advanced - Learning Informatica PowerCenter 9.x - page 82

3. Click on Compare .
4. You can check out the different types of comparison options of the two sources.
The Informatica PowerCenter comparison utility gives you the option to check
out the differences between the repository and versions in the General tab. The
table tab allows you to check out the differences between the owner name and the
database type. The Column tab allows you to see the differences in the column
and other properties related to columns such as data type, precision, and other
constraints. Similar to this, when you compare targets and mappings, you can
check out the differences using the Compare Object functionality.
This can be helpful in the analysis of the components and to understand the difference
between the newer and the existing components.