topic Re: answer plz...... in Application Development and Automation Discussions

answer plz......

Former Member — Wed, 18 Apr 2007 12:37:44 GMT

what is the difference between lsmw and bdc and bapi?

Re: answer plz......

Former Member — Wed, 18 Apr 2007 12:39:49 GMT

well in short lsmw and bdc are for data upload and bapi is a funtion module used for various purpose .

Re: answer plz......

Former Member — Wed, 18 Apr 2007 12:41:14 GMT

give u r mail id i send documents

please read these sites

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

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

http://www.sap-img.com/abap/interview-question-on-bapi-rfc-abap-objects-tables.htm

rewards if it helps u

Vijay Pawar

Re: answer plz......

Former Member — Wed, 18 Apr 2007 12:41:24 GMT

Hi Madhav,

BDC is the way to transfer data by writing a batch input program which can use either session or call transaction method.

LSMW used to transfer data without/less code.

What type of data we transfer using LSMW?

LSMW is best suited for transferring master data.

Actually BDC and LSMW are not comparable at all.

for example LSMW itself can use BDC as a way of mass data transfer.

BDC is a mass data transfer technique via screen logic of existing SAP Data entry transactions. It behaves as if you are manually making thousand of entires into sap system as a background job. And that is probably the reason why BAPI's are preffered over BDC's.

On the other hand LSMW is a tool to facilitate DATA migration from other legacy systems ... It contains step by step procedure for data migration.

Like Managing Data Migration Projects , Creating Source Structures , Mapping Source structures wid Target structures , etc etc

LSMW internally might well be using the following techniqes for data transfer..

1. IDOX

2. Direct Input / BDC

4. BAPI's

LSMW is an encapsulated data transfer tool. It can provide the same functionality as BDC infact much more but when coming to techinical perspective most the parameters are encapulated. To listout some of the differences :

LSMW is basicaly designed for a fuctional consultant who do not do much coding but need to explore the fuctionality while BDC is designed for a technical consultant.

LSMW offers different techinque for migrating data: Direct input ,BAPI,Idoc,Batch input recording. While bdc basically uses recording.

LSMW mapping is done by SAP while in BDC we have to do it explicitly .

LSMW is basically for standard SAP application while bdc basically for customized application.

Coding can be done flexibly in BDC when compared to LSMW

Hope this resolves your query.

Reward all the helpful answers.

Regards

Re: answer plz......

Former Member — Wed, 18 Apr 2007 12:41:45 GMT

refer to the following link

http://www.sapmaterial.com/?gclid=CN322K28t4sCFQ-WbgodSGbK2g

hope all ur doubts will get clear

regards

ravish

<b>plz dont forget to reward points if helpful</b>

Re: answer plz......

Former Member — Wed, 18 Apr 2007 12:42:23 GMT

Hi,

All are used to upload the data into SAP

se the links:

http://www.sapbrain.com/TOOLS/LSMW/SAP_LSMW_steps_introduction.html

http://esnips.com/doc/8e732760-5548-44cc-a0bb-5982c9424f17/lsmw_sp.ppt

http://esnips.com/doc/f55fef40-fb82-4e89-9000-88316699c323/Data-Transfer-Using-LSMW.zip

http://esnips.com/doc/1cd73c19-4263-42a4-9d6f-ac5487b0ebcb/LSMW-with-Idocs.ppt

http://esnips.com/doc/ef04c89f-f3a2-473c-beee-6db5bb3dbb0e/LSMW-with-BAPI.ppt

http://esnips.com/doc/7582d072-6663-4388-803b-4b2b94d7f85e/LSMW.pdf

BAPI

http://help.sap.com/saphelp_nw2004s/helpdata/en/7e/5e114a4a1611d1894c0000e829fbbd/frameset.htm

http://www.sapgenie.com/abap/bapi/example.htm

http://help.sap.com/saphelp_46c/helpdata/en/9b/417f07ee2211d1ad14080009b0fb56/frameset.htm

http://searchsap.techtarget.com/originalContent/0,289142,sid21_gci948835,00.html

http://techrepublic.com.com/5100-6329-1051160.html#

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

http://www.sap-img.com/abap/bapi-conventions.htm

http://www.sappoint.com/abap/bapiintro.pdf

http://www.sapgenie.com/abap/bapi/example.htm

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDAPII/CABFAAPIINTRO.pdf

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFABAPIREF/CABFABAPIPG.pdf

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCFESDE8/BCFESDE8.pdf

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFABAPIREF/CABFABAPIPG.pdf

http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDAPII/CABFAAPIINTRO.pdf

http://techrepublic.com.com/5100-6329-1051160.html#

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

http://www.sap-img.com/abap/bapi-conventions.htm

http://www.sappoint.com/abap/bapiintro.pdf

BDC

BDC:

Batch Data Communication (BDC) is the process of transferring data from one SAP System to another SAP system or from a non-SAP system to SAP System.

Features :

BDC is an automatic procedure.

This method is used to transfer large amount of data that is available in electronic medium.

BDC can be used primarily when installing the SAP system and when transferring data from a legacy system (external system).

BDC uses normal transaction codes to transfer data.

Types of BDC :

CLASSICAL BATCH INPUT (Session Method)

CALL TRANSACTION

BATCH INPUT METHOD:

This method is also called as ‘CLASSICAL METHOD’.

Features:

Asynchronous processing.

Synchronous Processing in database update.

Transfer data for more than one transaction.

Batch input processing log will be generated.

During processing, no transaction is started until the previous transaction has been written to the database.

CALL TRANSACTION METHOD :

This is another method to transfer data from the legacy system.

Features:

Synchronous processing. The system performs a database commit immediately before and after the CALL TRANSACTION USING statement.

Updating the database can be either synchronous or asynchronous. The program specifies the update type.

Transfer data for a single transaction.

Transfers data for a sequence of dialog screens.

No batch input processing log is generated.

For BDC:

http://myweb.dal.ca/hchinni/sap/bdc_home.htm

https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/bdc&;

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

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

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

http://help.sap.com/saphelp_47x200/helpdata/en/69/c250684ba111d189750000e8322d00/frameset.htm

http://www.sapbrain.com/TUTORIALS/TECHNICAL/BDC_tutorial.html

Check these link:

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

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

http://www.itcserver.com/blog/2006/06/30/batch-input-vs-call-transaction/

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

reward if useful

regards,

ANJI

Re: answer plz......

Former Member — Wed, 18 Apr 2007 12:47:50 GMT

Hai,

BDC and LSMW are the two data migration techniques (from legacy to SAP) . BDC technique is usually done by ABAPers. It consists of three methods.

1) Call Dialog Method

2) Session Method

3) Call Transaction Method

In the case of Session Method , a BDC Session is created , which has the data and info to run it in batch mode. When the user runs this session, every transactions are run in batch mode and tables are updated.

WHile in call transaction, no session is created. Instead , a report prog is created , which takes input from the file and calls the transaction in Batch mode.

Call dialog method is similar to call transaction, except that updation is done by the calling program itself.This method is obsolete.

Advantages of Batch Input Method are

1)Can process large data volumes

2) data integrity is maintained

Just check these links.

Hope this helps you a lot.

Now:Let me explain diff.bet BDC and bapi:

et me explain BAPI first...

1) BAPI = Business Application Programming Interface.

From a programmer's perspective a BAPI is simply a

certain type of RFC-enabled function module.

Recommended and supported way for management of many SAP business objects like sales, customers, vendors stuff like that.

Business objects means business literally.

2) BDC = Batch Data Commands

a SAP standard transaction while recording it. This recording can be turned into an ABAP program or function module. You can modify these programs to change, e. g., the static data that you entered in the recording to dynamic data that is read from a file or something like that.

The diffrence is that BAPI is a kind of API, kind of library but BDC is not...

BDC is a kind of way to upload data. for example,

when you create customer using 'XD01', you don't know what records is inserted in which table. sometimes we need to take a repeated job. crateting lots of customers.

at that time, you can use BDC.

Reward points if it helps you.

Regds,

Rama chary.Pammi

Re: answer plz......

Former Member — Wed, 18 Apr 2007 12:52:48 GMT

Hi,

BDC and LSMW are for uploading data from some other source.

In BDC you have to get the data into internal table and upload, wher as LSMW has some standard steps where you can load and upload data into the data base.

BAPI are interfaces which uploads data as well perform some extra functionality like process order confirmation etc..I mean there are different BAPI for different purpose to serve..

reward if useful

regards,

nazeer