BDC INTERVIEW QUESTIONS

BDC

What is full form of BDC Session?

Batch Data Communication Session.

What are the steps in a BDC session?

The first step in a BDC session is to identify the screens of the transaction that the program will process. Next step is to write a program to build the BDC table that will be used to submit the data to SAP. The final step is to submit the BDC table to the system in the batch mode or as a single transaction by the CALL TRANSACTION command.

How do you save data in BDC tables?

The data in BDC tables is saved by using the field name 'BDC_OKCODE' and field value of '/11'.

 What is the last entry in all BDC tables?

In all BDC tables the last entry is to save the data by using the field name BDC_OKCODE and a field value of '/11'.

 What is a multiple line field?

A multiple line field is a special kind of field which allows the user to enter multiple lines of data into it.

How do you populate data into a multiple line field?

To populate data into a multiple line field, an index is added to the field name to indicate which line is to be populated by the BDC session (Line index).

Write the BDC table structure.

BDC table structure

FIELD TYPE DESCRIPTION

Program CHAR (8) Program name of transaction.

DynPro CHAR (4) Screen number of transaction.

DynBegin CHAR (1) Indicator for new screen.

Fnam CHAR (35) Name of database field from screen.

Fval CHAR (80) Value to submit to field.

Does the CALL TRANSACTION method allow multiple transactions to be processed by SAP?

No. The CALL TRANSACTION method allows only a single transaction to be processed by SAP.

 Does the BDC-INSERT function allow multiple transactions to be processed by SAP?

YES.

What is the syntax for 'CALL TRANSACTION'?

CALL TRANSACTION trans [ using bdctab MODE mode ].

Three possible entries are there for MODE.

A - Show all screens.

E - Show only screens with errors.

N - Show no screens.

4) SELECTION SCREEN PROGRAMMING

SELECTION SCREEN PROGRAMMING:

It is used for designing the selection screen with different elements.

As part of selection screen,we can have the following elements .

1) Comments(labels)

2) Blocks

3) Tabbed blocks

4) Push button

5) Check boxes

6) Radio button

7) Sub screens

8) Drop down list box

9) Input/output fields

Declare parameters:

    Table name-field name

Note: Whenever a program variable needs to refer the database fields. It is not recommended to hot-code the data type and size. because in future, if the database field properties are changed, we need to modify the corresponding declarations as part of multiple programs.

This process increases the maintenance cost.

To avoid this we can refer to the element of field or directly refer to the field itself.

SELECTION EVENTS:

This events triggered on the selection screen..

1) INITIALIZATION.

• This event is triggered whenever the selection screen is displayed.
• This event can be handled to initialize the selection screen fields.
• This event can be triggered only once in the life time of a selection screen.
• First event triggered on selection screen is “INITIALIZATION”.
• By default selection screen no is “1000”.
• Whenever a selection screen element overlaps with other element, it leads to activation error.

.................................TO BE CONTINUED.....................................

3) INTERNAL TABLES

 INTERNAL TABLES:

• It is a temporary table created in application server to store multiple records temporarily.
• The life time and scope of the internal table is with in the program where it is created.
• It can be created either with header or without header.
• Header is like structure which can store single record, it is also called as wa(work area).
• The body of internal table is stored multiple records.
• To process the internal table data we need work area that is to append,reading,modifying,
• Deleting and for looping.

Append:

It adds the data from wa to end of internal table.

Loop-End Loop:

It is used for looping the internal table data from body to header.

Describe:

It contains the no of records in the internal table and stores the count values in the system field.

Sy-Tabix:

It is a system field ,which stores the current index position in the internal table.The index of the internal table starts from 1.

1) First method to create internal table.

Syntax:For declaring Internal table.

Data:begin of <IT> occurs <n>,

         Field1,

         Field2,

         -------,

         -------,

         End of <IT>.

<n> ranges from 0,1,2,3……..

Example program:

DATA:begin of emp occurs 0,

            Empno  type i,

            Ename  type c,

            Edesg   type c,

            End of emp.

     Emp-empno = 1.

     Emp-ename = ‘santu’

     Emp-edesg = ‘ceo;.

  Append emp.  ( “inserts one record into internal table body”)

Clear emp.     (“clears work area”)

begin of emp occurs 2,

            Empno  type i,

            Ename  type c,

            Edesg   type c,

            End of emp.

     Emp-empno = 1.

     Emp-ename = ‘santhosh’

     Emp-edesg = ‘team lead;

  Append emp.  ( “inserts one record into internal table body”)

Clear emp.     (“clears work area”)

2) Second method to create internal table.

Syntax:

Data:<internal table>like<existing structure>occurs<n>[with header line].

<n> ranges from 0,1,2,3….

By using above syntax we can create int.table with header line or without header line.

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•  It is not recommended to use the first and second methods for declaring internal tables,
•  Because in both syntaxes we need “occurs” statements which will do not static allocation memory.

STANDARD WAY OF DECLARING INTERNAL TABLE.

i)create the type declaration with the required fields.

Syntax:types:begin of <type name>,

                      Field 1,

                      Field 2,

                      --------

                      End of <internal table>.

ii)create the internal table work area and body based on data declaration.

Data:wa type <internal table>

          Itab type standard table of <internal table>

                          OR

 Data:wa type <internal table>

          Itab type standard table of wa.

                          OR

 Data: Itab type standard table of <internal table>

           wa like line of Itab.

        

Example:

Types:begin of ty_emp,

            Eno      type zeno, 

            Ename  type zename,                                                               

            Edesg   type zedesg,

            End of ty_emp.

 Data:wa   type ty_emp,

         Itab type standard table of ty_emp.

 Note:(we can refer from custom data elements or table data elements etc.)

To refresh the contents of internal table we can use

i)Clear

ii)Refresh

iii)Free

Clear:      It can clears the contents of int.table.

Refresh: Refreshes the contents of the int.table.

Free:       Clears the contents as well as deallocate the memory that is gets the memory to the initial screen

  

To delete the duplicate records from int.table we use syntax “delete adjacent duplicates”

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Internal table creation:

2.2)T-CODES

STNDARD TRANSACTION CODES IN SAP:

SE01		Transport Organizer (Extended)
SE03		Transport Organizer Tools
SE06		Set Up Transport Organizer
SE07		CTS Status Display
SE09		Transport Organizer
SE10		Transport Organizer
SE11		ABAP Dictionary Maintenance
SE11_OLD		ABAP Dictionary Maintenance
SE12		ABAP Dictionary Display
SE12_OLD		ABAP Dictionary Display
SE13		Maintain Technical Settings (Tables)
SE14		Utilities for Dictionary Tables
SE15		ABAP/4 Repository Information System
SE16		Data Browser
SE16N		General Table Display
SE16RFCDESSECU		Data Browser RFCDESSECU
SE16T000		Data Browser T000
SE16TXCOMSECU		Data Browser TXCOMSECU
SE16USR40		Data Browser USR40
SE16USRACL		Data Browser USRACL
SE16USRACLEXT		Data Browser USRACLEXT
SE16V_T599R		Data Browser V_T599R
SE16W3TREES		Data Browser W3TREES
SE16WWWFUNC		Data Browser WWWFUNC
SE16WWWREPS		Data Browser WWWREPS
SE16_BKPF		Data Browser BKPF
SE16_BSEG		Data Browser BSEG
SE16_BSEG_ADD		Data Browser BSEG_ADD
SE16_BSID		Data Browser BSID
SE16_BSIK		Data Browser BSIK
SE16_BSIS		Data Browser BSIS
SE16_ECMCA		Data Browser Journal Entries
SE16_ECMCT		Data Browser Totals Records
SE16_KNA1		Data Browser KNA1
SE16_KNB1		Data Browser KNB1
SE16_LFA1		Data Browser LFA1
SE16_LFB1		Data Browser LFB1
SE16_MARA		Data Browser MARA
SE16_MARC		Data Browser MARC
SE16_RFCDESSECU		Data Browser RFCDESSECU
SE16_SKA1		Data Browser SKA1
SE16_SKB1		Data Browser SKB1
SE16_T000		Data Browser T000
SE16_T807R		Data Browser T807R
SE16_TCJ_CHECK_STACK		Data Browser TCJ_CHECK_STACKS
SE16_TCJ_CPD		Data Browser TCJ_CPD
SE16_TCJ_C_JOURNALS		Data Browser TCJ_C_JOURNALS
SE16_TCJ_DOCUMENTS		Data Browser TCJ_DOCUMENTS
SE16_TCJ_POSITIONS		Data Browser TCJ_POSITIONS
SE16_TCJ_WTAX_ITEMS		Data Browser TCJ_WTAX_ITEMS
SE16_TXCOMSECU		Data Browser TXCOMSECU
SE16_USR40		Data Browser USR40
SE16_USRACL		Data Browser USRACL
SE16_USRACLEXT		Data Browser USRACLEXT
SE16_V_T599R		Data Browser V_T599R
SE16_W3TREES		Data Browser W3TREES
SE16_WWWFUNC		Data Browser WWWFUNC
SE16_WWWREPS		Data Browser WWWREPS
SE17		General Table Display
SE18		Business Add-Ins: Definitions
SE19		Business Add-Ins: Implementations
SE21		Package Builder
SE24		Class Builder
SE29		Application Packets
SE30		ABAP Objects Runtime Analysis
SE32		ABAP Text Element Maintenance
SE32_OLD		ABAP Text Element Maintenance
SE32_WB99		ABAP Text Element Maintenance
SE33		Context Builder
SE35		ABAP/4 Dialog Modules
SE36		Logical Database Builder
SE37		ABAP Function Modules
SE38		ABAP Editor
SE38L		SE38 with RCIFIMAX
SE38M		Define Variant for RAPOKZFX
SE38N		SE38 with Default RDELALOG
SE38P		Delete ALE Change Pointers
SE38Q		Init. Data Transfer In Transit Qty
SE39		Splitscreen Editor: (New)
SE39O		Splitscreen Editor: Program Compare
SE40		MP: Standards Maint. and Translation
SE41		Menu Painter
SE43		Maintain Area Menu
SE43N		Maintain Area Menu
SE51		Screen Painter
SE54		Generate table view
SE55		Internal table view maintenance call
SE56		Internal table view display call
SE57		Internal table view deletion call
SE58		Web Dynpro Converter
SE61		SAP Documentation
SE61D		Display of SAPScript Text
SE62		Industry Utilities
SE63		Translation: Initial Screen
SE63_OTR		Translation - OTR
SE64		Terminology
SE71		SAPscript form
SE72		SAPscript Styles
SE73		SAPscript Font Maintenance
SE74		SAPscript format conversion
SE75		SAPscript Settings
SE75TTDTGC		SAPscript: Change standard symbols
SE75TTDTGD		SAPscript: Display standard symbols
SE76		SAPscript: Form Translation
SE77		SAPscript Styles Translation
SE78		Administration of Form Graphics
SE80		Object Navigator
SE80_ENH		Object Navigator
SE81		Application Hierarchy
SE82		Application Hierarchy
SE83		Reuse Library
SE83_START		Start Reuse Library
SE84		Repository Information System
SE85		ABAP/4 Repository Information System
SE89		Maintain Trees in Information System
SE8I		Lists in Repository Infosystem
SE90		Process Model Information System
SE91		Message Maintenance
SE92		New SysLog Msg Maintenance as of 46A
SE92N		Maintain System Log Messages
SE93		Maintain Transaction Codes
SE94		Customer enhancement simulation
SE95		Modification Browser
SE95_UTIL		Modification Browser Utilities
SE97		Maint. transaction call authorizatn