Sriram,
There are various notes and documents available for quick reference. Your query is generalised/vast and it will be difficult to answer over this forum unless specifically categorized.
Basid requirements on implementing MDM system and details of other associated systems in a landscape must be gathered before implementing. Solution Architect with inputs from business team can best define MDM system.
Please refer MDM reference guide for more clarifications. If you have ny specific queries- please let us know.
Regards