Batch Data Communication (BDC) is a technique in ABAP
technology to upload data from a system to SAP system. It can be sap to sap or
non sap to sap.
BDC works through an ABAP program and works on the principle
of simulating user input for transactional screen. User has to follow few steps
and then data will be recorded from a physical file.
It is a uni-directional batch interfacing technique used for
uploading data into SAP R/3.
BDC can transfer data from one SAP System to another SAP
System or can transfer data from non-SAP System to SAP System too. Generally
data is transformed in text file format which later on uploaded into SAP system
via BDC program.
Finally the administrator has to process the job to complete
the data upload, as by BDC it can create a session with all the data.
There are couple of types of techniques in BDC in case of
data upload. That will be discussed gradually in coming tutorials.