data transfer

[Former Member]

Hi,

in bdc.. we transfer the data from LEGACY SYSTEM into sap system.

in real time what is mean by legacy system and if it is other than sap

how the functional people give the requirement..

whether is is falt file or excel sheet.

pls.. how the bdc work is gping on Real time scenario.

help me,

regards,

[Former Member]

Hi,

1, Legacy system means any system other than SAP system.

2.Functional ppl analyse how the data stored in this particular legacy system according to business, and try to relate those fields in legacy system to the standard fields in SAP system.

3.so the Data in the legacy system can be taken into the text file(general practise)

and with the help of bdc...it is uploaded into SAP system

[Former Member]

Hi Vijay,

Legacy System is nothing but a system other than the SAP in this case.This means the present system is being used by some software and technology and contains the whole data. So, now if they want to implement SAP, then all the data they have used till today need to transfer into SAP system (tables). So, in order to upload/transfer the data into SAP, we have lot of mechanisms like BDC program, LSMW, ALE/EDI IDOCS etc.

For BDC program, a flat file needs to be generated. So, the functional and the data migration guys analyze the Legacy System and then prepare a flat file of any format and then give the same to the Developer for creation of a BDC program.

Again there are two types in BDC like session method and call transaction method.Each type has its own advantages and depending on the business requirement the developer and functional guys decide which one to develop and to use.

Hope this helps.

Please reward if useful.

Thanks,

Srinivasa