About BDC programming

[Former Member]

Hi,

I am fresher to ABAP. plz can u help me.

I want to learn BDC Call transation and session .

plz can u send me the datail document on these two topics.

[Former Member]

hi Sanju,

Surf through the links you find lots of material available ..

Table control in BDC

http://www.sap-img.com/abap/bdc-example-using-table-control-in-bdc.htm

BDC

http://www.sap-img.com/bdc.htm

Regards,

Santosh

[ibrahim_u]

Hi

You can find detailed description going to following link.

http://help.sap.com/saphelp_46c/helpdata/en/fa/097140543b11d1898e0000e8322d00/frameset.htm

Choose the "Data Transfer -> Additional Information ->" menu path.

ibrahim

[Former Member]

check the below link:

http://www.sap-img.com/abap/question-about-bdc-program.htm

http://www.sap-img.com/abap/difference-between-batch-input-and-call-transaction-in-bdc.htm

http://www.geekinterview.com/Interview-Questions/SAP-R-3/BDC

http://www.planetsap.com/bdc_main_page.htm

http://www.sap-basis-abap.com/sapab038.htm

http://www.geekinterview.com/question_details/1516

Regards,

Prakash.

[former_member189629]

Sanju,

You will find a lot of info on BDCs on the Web but let me first give you an outline.

Purpose of BDC: Implementing a new software system takes major effort. New implementation requires moving data from the present system i.e., legacy system into the R3 system.

Approach:

1) Identify the transaction/table into which data is to be populated

2) If it is a Transaction, record a simulation of data entry by using tcode SHDB. by doing this, you will get to know what all fields are to be populated in what screens. Use the help of a Functional expert if required to enter data in a transaction

3)If table, there are standard BAPIs andf function modules to update/populate DB tables. So, you will have to find them

4) Prepare an input file for uploading in the same format as the transacdtion simulation of the table field order

5) Create a structure in your program with the sae as the transaction enry order or table field order and populate it in the program

6) Use CALL TRANSACTION<tcode> or SESSION methods to populate the screens

If the above sounds like latin, pls refer to the links below

http://www.sap-img.com/bdc.htm

http://www.sap-img.com/abap/learning-bdc-programming.htm

http://www.sap-img.com/abap/bdc-program-for-purchase-info-records.htm

Pl reward if helpful (I am sure it will be )

K

[Former Member]

Hello,

Session method.

1) synchronous processing.

2) can tranfer large amount of data.

3) processing is slower.

4) error log is created

5) data is not updated until session is processed.

Call transaction.

1) asynchronous processing

2) can transfer small amount of data

3) processing is faster.

4) errors need to be handled explicitly

5) data is updated automatically

Batch Data Communication (BDC) is the oldest batch interfacing technique that SAP provided since the early versions of R/3. BDC is not a typical integration tool, in the sense that, it can be only be used for uploading data into R/3 and so it is

not bi-directional.

BDC works on the principle of simulating user input for transactional screen, via an ABAP program.

Typically the input comes in the form of a flat file. The ABAP program reads this file and formats the input data screen by screen into an internal table (BDCDATA). The transaction is then started using this internal table as the input and executed in the background.

In ‘Call Transaction’, the transactions are triggered at the time of processing itself and so the ABAP program must do the error handling. It can also be used for real-time interfaces and custom error handling & logging features. Whereas in

Batch Input Sessions, the ABAP program creates a session with all the transactional data, and this session can be viewed, scheduled and processed (using Transaction SM35) at a later time. The latter technique has a built-in error processing mechanism too.

Batch Input (BI) programs still use the classical BDC approach but doesn’t require an ABAP program to be written to format the BDCDATA. The user has to format the data using predefined structures and store it in a flat file. The BI program then reads this and invokes the transaction mentioned in the header record of the file.

Direct Input (DI) programs work exactly similar to BI programs. But the only difference is, instead of processing screens they validate fields and directly load the data into tables using standard function modules. For this reason, DI programs are much faster (RMDATIND - Material Master DI program works at least 5 times faster) than the BDC counterpart and so ideally suited for loading large volume data. DI programs are not available for all application areas.

Check the sap help for detailed BDC process.Let me know if u face any problem.

Regards

[Former Member]

hi,

BDC allows you to perform database updates in the background using standard SAP transactions.

There is lot available on net.

however, you will find these links really useful.

www.sap-img.com/abap/learning-bdc-programming.htm

www.sappoint.com/abap/bdcconcept.pdf

www.sapdevelopment.co.uk/bdc/bdchome.htm

www.planetsap.com/bdc_main_page.htm

sap.ittoolbox.com/documents/popular-q-and-a/clearing-bdc-screen-2079

Good questions and anwers

www.geekinterview.com/Interview-Questions/SAP-R-3/BDC

Regards,

Richa