Hi,
A legacy system is an existing computer system or application program which continues to be used because the user (typically an organization) does not want to replace or redesign it. So I think you can make a definition for it now.
Go through this link and get some idea:
---Satish
Hi,
Legacy = Old System
For example assume you have started a company recently and using SAP in your concern, you happend to deal with a vendor who is existing in the market for a long time ( assume before SAP came into the world )so he was using non SAP system assume MAINFRAMES.
When you want to do business dealing with him you use SAP XI to integrate with his Mainframes system and your SAP system.
From Mainframes you can get data in the mode of file,With file Adapter you can read the data and do valadation in the SAP XI and post the data in to your SAP with help of IDOC adapter in your SAP System.
Here MAINFRAMES is considered as Legacy system.
Let me know any clarification.
Regards
Agasthuri Doss
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