To cover the process controling,coordinating,Track code,
change requirement made to them

CMM used to store our test cases and to store Test plans 
which are other documents that are related to testing

and also used to give status for our test cases which we 
executed

Example
Continus 
VSS

Configuration management (CM) is the processes of 
controlling, coordinating, and tracking the Standards and 
procedures and managing changes in an evolving software 
product.

configuration management tool it acts same likebackup 
system and version controling

Configuration mgmt tool is basically for Version Controlling
to make sure that how many versions are created for that
particular file.

Tools are like: VSS