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diff b/w reports n dialog prog...atleast three plz

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  • author's profile photo Former Member
    Former Member
    Posted on Sep 11, 2007 at 05:39 AM

    Report :

    1.Type of program is executable program.

    2. it can be executed directly i.e. F8

    Module pool

    1. Module pool program

    2. It cannot be executed using F8. It is executed using transaction assigned to it

    report programs are stand alone programs. they are of type "E" [executable prgs].

    report programs cant be used for database updations as we cant create a transactions for them.

    module pool programs are caleed on-line programs. they are of type "M". module pool prgs are used for creating transcations which are used for updating databse tables.

    TYPES 1

    Type 1 programs have the important characteristic that they do not have to be controlled using user-defined screens. Instead, they are controlled by the runtime environment, which calls a series of processing blocks (and selection screens and lists where necessary) in a fixed sequence. User actions on screens can then trigger further processing blocks.

    You can start a type 1 program and the corresponding processor in the runtime environment using the SUBMIT statement in another ABAP program. There are also various ways of starting a type1 program by entering its program name. This is why we refer to type 1 programs as executable programs.

    When you run a type 1 program, a series of processors run in a particular order in the runtime environment. The process flow allows the user to enter selection parameters on a selection screen. The data is them selected from the database and processed. Finally, an output list is displayed. At no stage does the programmer have to define his or her own screens. The runtime environment also allows you to work with a logical database. A logical database is a special ABAP program which combines the contents of certain database tables. The flow of a type 1 program is oriented towards reporting, whose main tasks are to read data from the database, process it, and display the results. This is why executable programs (type 1) in the R/3 System are often referred to as reports, and why running an executable program is often called reporting.

    Since it is not compulsory to define event blocks, you can yourself determine the events to which your ABAP program should react. Furthermore, you can call your own screens or processing blocks at any time, leaving the prescribed program flow. You can use this, for example, to present data in a table on a dialog screen instead of in a list. The simplest executable program (report) contains only one processing block (START-OF-SELECTION).

    Executable programs do not require any user dialog. You can fill the selection screen using a variant and output data directly to the spool system instead of to a list. This makes executable programs (reports) the means of background processing in the R/3 System.

    You can also assign a transaction code to an executable program. Users can then start it using the transaction code and not the program name. The reporting-oriented runtime environment is also called when you run a report using a transaction code. This kind of transaction is called a report transaction.

    It is appropriate to use executable programs (reports) when the flow of your program corresponds either wholly or in part to the pre-defined flow of the runtime environment. Until Release 4.5A, the only way to use a logical database was to use an executable program. However, from Release 4.5A, it is also possible to call logical databases on their own.

    Type M

    The most important technical attribute of a type M program is that it can only be controlled using screen flow logic. You must start them using a transaction code, whcih is linked to the program and one of its screens (initial screen). Another feature of these programs is that you must define your own screens in the Screen Painter (although the intial screen can be a selection screen).

    When you start a program using a transaction code, the runtime environment starts a processor that calls the initial screen. This then calls a dialog module in the corresponding ABAP program. The remainder of the program flow can take any form. For example, the dialog module can:

    return control to the screen, after which, the processing passes to a subsequent screen. Each screen has a following screen, set either statically or dynamically.

    call other sequences of screens, selection screens or lists, from which further processing blocks in the ABAP program are started.

    call other processing blocks itself, either internally or externally.

    call other application programs using CALL TRANSACTION (type M program) or SUBMIT (type 1 program).

    ABAP programs with type M contain the dialog modules belonging to the various screens. They are therefore known as module pools. It is appropriate to use module pools when you write dialog-oriented programs using a large number of screens whose flow logic largely determines the program flow.

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  • author's profile photo Former Member
    Former Member
    Posted on Sep 11, 2007 at 05:42 AM

    Main purpose of modulepool is efficient usage of screen space(sub screens , tab strips,table controls ) etc.

    Module pool programs are also called dialog programs.

    The module Pool are reports prepared for different screens and to manage the sequeence of events of these screens, in the transaction SE80 you can see all the dynpros that you have for this kind of report, add new ones, add all types of element to the report.

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  • Posted on Sep 11, 2007 at 05:45 AM


    For executing the report you dont need a Transaction.

    For module pool program you have to <b>create a transaction</b>.

    For Reports you can have <b>Selection-screens</b>.

    Report programs can be associated with <b>Logical Databases</b>.

    Reports are basically intended to <b>read the data</b> from the database.



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