1. What guarantees the integration of all application modules?
The R/3 basis system guarantees the integration of all application modules. The R/3 basis s/w provides the run time environment for the R/3 applications ensures optimal integration, defines a stable architectural frame for system enhancements, and contains the administration tools for the entire system.
One of the main tasks of the basis system is to guarantee the portability of the complete system.
2. What are the central interfaces of the R/3 system?
Presentation Interface.
Database Interface.
Operating system Interface.
3. Which interface controls what is shown on the p.c.?
Presentation Interface.
4. Which interface converts SQL requirements in the SAP development system to those of the database?
Database Interface.
5. What is SAP dispatcher?
SAP dispatcher is the control agent that manages the resources for the R/3 applications.
6. What are the functions of dispatcher?
Equal distribution of transaction load to the work processes.
Management of buffer areas in main memory.
Integration of the presentation levels.
Organization of communication activities.
7. What is a work process?
A work process is where individual dialog steps are actually processed and the work is done. Each work process handles one type of request.
8. Name various work processes of R/3 system?
Dialog or Online (processes only one request at a time).
Background (Started at a specific time)
Update (primary or secondary)
Enque (Lock mechanism).
Spool (generated online or during back ground processing for printing).
9. Explain about the two services that are used to deal with communication.
Message Service: Used by the application servers to exchange short internal messages, all system communications.
Gateway Service: Enables communication between R/3 and external applications using CPI-C protocol.
10. Which work process triggers database changes?
Update work process.
11. Define service (within R/3)?
A service is a process or group of processes that perform a specific system function and often provide an application-programming interface for other processes to call.
12. What are the roll and page areas?
Roll and page areas are SAP R/3 buffers used to store user contexts (process requests). The SAP dispatcher assigns process requests to work processes as they are queued in the roll and page areas.
Paging area holds data from the application programs.
Roll area holds data from previous dialog steps and data that characterize the user.
13. What are the different layers in R/3 system?
Presentation Layer.
Application Layer.
Database Layer.
14. What are the phases of background processing?
Job Scheduling.
Job Processing.
Job Overview.
15. What components of the R/e system initiate the start of background jobs at the specified time?
The batch scheduler initiates the start of background job. The dispatcher then sends this request to an available background work process for processing.
16. Define Instance.
An instance is an administrative unit in which components of an R/3 systems providing one or more services are grouped together. The services offered by an instance are started and stopped at random. All components are parameterized using a joint instance profile. A central R/3 system consists of a single instance in which all-necessary SAP services are offered. Each instance uses separate buffer areas.
17. From hardware perspective, every information system can be divided into three task areas Presentation, Application Logic and Data Storage.
The R/3 Basis software is highly suitable for use in multi-level client/server architectures.
18. What are R/3 Basis configurations?
A central system with centrally installed presentation software.
Two-level client/server system with rolled out presentation software.
Two-level client/server system. Presentation and Application run on the same computer.
Three-level client/server system. Presentation, Application and database each run on separate computers.
19. What is a Service in SAP terminology?
A service refers to something offered by a s/w component.
20. What is Server in SAP terminology?
A component can consist of one process or a group and is then called the server for the respective service.
21. What is a client in SAP terminology?
A S/W component that uses the service (offered by a s/w component) is called a Client. At the same time these clients may also be servers for other services.
22.What is a SAP system?
The union of all s/w components that are assigned to the same databases is called as a SAP system.
23. What is the means of communications between R/3 and external applications?
The means of communication between R/2,R/3 and external applications is via the CPI-C handler or SAP Gateway, using the CPI-C Protocol.
24. What is the protocol used by SAP Gateway process?
The SAP Gateway process communicates with the clients based on the TCP/IP Protocol.
25. Expand CPI-C.
Common Program Interface Communication.
26. What is a Spool request?
Spool requests are generated during dialog or background processing and placed in the spool database with information about the printer and print format. The actual data is places in the Tem Se (Temporary Sequential objects).
27. What are different types of Log records?
V1 and V2. V1 must be processed before V2. But, we can have more than one V2 logs.
28. What are the types of Update requests?
An update request can be divided into one primary (V1) and several Secondary update components (V2). Time-critical operations are placed in V1 component and those whose timing is less critical are placed in V2 components. If a V1 update fails, V2 components will not be processed.
29. Dialog work processes perform only one dialog step and then available for the next request.
30. Explain what is a transaction in SAP terminology.
In SAP terminology, a transaction is series of logically connected dialog steps.
31. Explain how SAP GUI handles output screen for the user.
The SAP front-end s/w can either run on the same computer or on different computers provided for that purpose. User terminal input is accepted by the SAP terminal program SAP GUI, converted to SAP proprietary format and sent to the SAP dispatcher. The dispatcher coordinates the information exchange between the SAP GUIs and the work processes. The dispatcher first places the processing request in request queues, which it then processes. The dispatcher dispatches the requests one after another, to the available work process. The actual processing takes place in the work process. When processing is complete, the result of a work process is returned via the dispatcher to the SAP GUI. The SAP GUI interprets the received data and generates the output screen for the user.
Showing posts with label ABAP. Show all posts
Showing posts with label ABAP. Show all posts
Tuesday, February 19, 2008
SAP ARCHITECTURE
1. What guarantees the integration of all application modules?
The R/3 basis system guarantees the integration of all application modules. The R/3 basis s/w provides the run time environment for the R/3 applications ensures optimal integration, defines a stable architectural frame for system enhancements, and contains the administration tools for the entire system.
One of the main tasks of the basis system is to guarantee the portability of the complete system.
2. What are the central interfaces of the R/3 system?
Presentation Interface.
Database Interface.
Operating system Interface.
3. Which interface controls what is shown on the p.c.?
Presentation Interface.
4. Which interface converts SQL requirements in the SAP development system to those of the database?
Database Interface.
5. What is SAP dispatcher?
SAP dispatcher is the control agent that manages the resources for the R/3 applications.
6. What are the functions of dispatcher?
Equal distribution of transaction load to the work processes.
Management of buffer areas in main memory.
Integration of the presentation levels.
Organization of communication activities.
7. What is a work process?
A work process is where individual dialog steps are actually processed and the work is done. Each work process handles one type of request.
8. Name various work processes of R/3 system?
Dialog or Online (processes only one request at a time).
Background (Started at a specific time)
Update (primary or secondary)
Enque (Lock mechanism).
Spool (generated online or during back ground processing for printing).
9. Explain about the two services that are used to deal with communication.
Message Service: Used by the application servers to exchange short internal messages, all system communications.
Gateway Service: Enables communication between R/3 and external applications using CPI-C protocol.
10. Which work process triggers database changes?
Update work process.
11. Define service (within R/3)?
A service is a process or group of processes that perform a specific system function and often provide an application-programming interface for other processes to call.
12. What are the roll and page areas?
Roll and page areas are SAP R/3 buffers used to store user contexts (process requests). The SAP dispatcher assigns process requests to work processes as they are queued in the roll and page areas.
Paging area holds data from the application programs.
Roll area holds data from previous dialog steps and data that characterize the user.
13. What are the different layers in R/3 system?
Presentation Layer.
Application Layer.
Database Layer.
14. What are the phases of background processing?
Job Scheduling.
Job Processing.
Job Overview.
15. What components of the R/e system initiate the start of background jobs at the specified time?
The batch scheduler initiates the start of background job. The dispatcher then sends this request to an available background work process for processing.
16. Define Instance.
An instance is an administrative unit in which components of an R/3 systems providing one or more services are grouped together. The services offered by an instance are started and stopped at random. All components are parameterized using a joint instance profile. A central R/3 system consists of a single instance in which all-necessary SAP services are offered. Each instance uses separate buffer areas.
17. From hardware perspective, every information system can be divided into three task areas Presentation, Application Logic and Data Storage.
The R/3 Basis software is highly suitable for use in multi-level client/server architectures.
18. What are R/3 Basis configurations?
A central system with centrally installed presentation software.
Two-level client/server system with rolled out presentation software.
Two-level client/server system. Presentation and Application run on the same computer.
Three-level client/server system. Presentation, Application and database each run on separate computers.
19. What is a Service in SAP terminology?
A service refers to something offered by a s/w component.
20. What is Server in SAP terminology?
A component can consist of one process or a group and is then called the server for the respective service.
21. What is a client in SAP terminology?
A S/W component that uses the service (offered by a s/w component) is called a Client. At the same time these clients may also be servers for other services.
22.What is a SAP system?
The union of all s/w components that are assigned to the same databases is called as a SAP system.
23. What is the means of communications between R/3 and external applications?
The means of communication between R/2,R/3 and external applications is via the CPI-C handler or SAP Gateway, using the CPI-C Protocol.
24. What is the protocol used by SAP Gateway process?
The SAP Gateway process communicates with the clients based on the TCP/IP Protocol.
25. Expand CPI-C.
Common Program Interface Communication.
26. What is a Spool request?
Spool requests are generated during dialog or background processing and placed in the spool database with information about the printer and print format. The actual data is places in the Tem Se (Temporary Sequential objects).
27. What are different types of Log records?
V1 and V2. V1 must be processed before V2. But, we can have more than one V2 logs.
28. What are the types of Update requests?
An update request can be divided into one primary (V1) and several Secondary update components (V2). Time-critical operations are placed in V1 component and those whose timing is less critical are placed in V2 components. If a V1 update fails, V2 components will not be processed.
29. Dialog work processes perform only one dialog step and then available for the next request.
30. Explain what is a transaction in SAP terminology.
In SAP terminology, a transaction is series of logically connected dialog steps.
31. Explain how SAP GUI handles output screen for the user.
The SAP front-end s/w can either run on the same computer or on different computers provided for that purpose. User terminal input is accepted by the SAP terminal program SAP GUI, converted to SAP proprietary format and sent to the SAP dispatcher. The dispatcher coordinates the information exchange between the SAP GUIs and the work processes. The dispatcher first places the processing request in request queues, which it then processes. The dispatcher dispatches the requests one after another, to the available work process. The actual processing takes place in the work process. When processing is complete, the result of a work process is returned via the dispatcher to the SAP GUI. The SAP GUI interprets the received data and generates the output screen for the user.
The R/3 basis system guarantees the integration of all application modules. The R/3 basis s/w provides the run time environment for the R/3 applications ensures optimal integration, defines a stable architectural frame for system enhancements, and contains the administration tools for the entire system.
One of the main tasks of the basis system is to guarantee the portability of the complete system.
2. What are the central interfaces of the R/3 system?
Presentation Interface.
Database Interface.
Operating system Interface.
3. Which interface controls what is shown on the p.c.?
Presentation Interface.
4. Which interface converts SQL requirements in the SAP development system to those of the database?
Database Interface.
5. What is SAP dispatcher?
SAP dispatcher is the control agent that manages the resources for the R/3 applications.
6. What are the functions of dispatcher?
Equal distribution of transaction load to the work processes.
Management of buffer areas in main memory.
Integration of the presentation levels.
Organization of communication activities.
7. What is a work process?
A work process is where individual dialog steps are actually processed and the work is done. Each work process handles one type of request.
8. Name various work processes of R/3 system?
Dialog or Online (processes only one request at a time).
Background (Started at a specific time)
Update (primary or secondary)
Enque (Lock mechanism).
Spool (generated online or during back ground processing for printing).
9. Explain about the two services that are used to deal with communication.
Message Service: Used by the application servers to exchange short internal messages, all system communications.
Gateway Service: Enables communication between R/3 and external applications using CPI-C protocol.
10. Which work process triggers database changes?
Update work process.
11. Define service (within R/3)?
A service is a process or group of processes that perform a specific system function and often provide an application-programming interface for other processes to call.
12. What are the roll and page areas?
Roll and page areas are SAP R/3 buffers used to store user contexts (process requests). The SAP dispatcher assigns process requests to work processes as they are queued in the roll and page areas.
Paging area holds data from the application programs.
Roll area holds data from previous dialog steps and data that characterize the user.
13. What are the different layers in R/3 system?
Presentation Layer.
Application Layer.
Database Layer.
14. What are the phases of background processing?
Job Scheduling.
Job Processing.
Job Overview.
15. What components of the R/e system initiate the start of background jobs at the specified time?
The batch scheduler initiates the start of background job. The dispatcher then sends this request to an available background work process for processing.
16. Define Instance.
An instance is an administrative unit in which components of an R/3 systems providing one or more services are grouped together. The services offered by an instance are started and stopped at random. All components are parameterized using a joint instance profile. A central R/3 system consists of a single instance in which all-necessary SAP services are offered. Each instance uses separate buffer areas.
17. From hardware perspective, every information system can be divided into three task areas Presentation, Application Logic and Data Storage.
The R/3 Basis software is highly suitable for use in multi-level client/server architectures.
18. What are R/3 Basis configurations?
A central system with centrally installed presentation software.
Two-level client/server system with rolled out presentation software.
Two-level client/server system. Presentation and Application run on the same computer.
Three-level client/server system. Presentation, Application and database each run on separate computers.
19. What is a Service in SAP terminology?
A service refers to something offered by a s/w component.
20. What is Server in SAP terminology?
A component can consist of one process or a group and is then called the server for the respective service.
21. What is a client in SAP terminology?
A S/W component that uses the service (offered by a s/w component) is called a Client. At the same time these clients may also be servers for other services.
22.What is a SAP system?
The union of all s/w components that are assigned to the same databases is called as a SAP system.
23. What is the means of communications between R/3 and external applications?
The means of communication between R/2,R/3 and external applications is via the CPI-C handler or SAP Gateway, using the CPI-C Protocol.
24. What is the protocol used by SAP Gateway process?
The SAP Gateway process communicates with the clients based on the TCP/IP Protocol.
25. Expand CPI-C.
Common Program Interface Communication.
26. What is a Spool request?
Spool requests are generated during dialog or background processing and placed in the spool database with information about the printer and print format. The actual data is places in the Tem Se (Temporary Sequential objects).
27. What are different types of Log records?
V1 and V2. V1 must be processed before V2. But, we can have more than one V2 logs.
28. What are the types of Update requests?
An update request can be divided into one primary (V1) and several Secondary update components (V2). Time-critical operations are placed in V1 component and those whose timing is less critical are placed in V2 components. If a V1 update fails, V2 components will not be processed.
29. Dialog work processes perform only one dialog step and then available for the next request.
30. Explain what is a transaction in SAP terminology.
In SAP terminology, a transaction is series of logically connected dialog steps.
31. Explain how SAP GUI handles output screen for the user.
The SAP front-end s/w can either run on the same computer or on different computers provided for that purpose. User terminal input is accepted by the SAP terminal program SAP GUI, converted to SAP proprietary format and sent to the SAP dispatcher. The dispatcher coordinates the information exchange between the SAP GUIs and the work processes. The dispatcher first places the processing request in request queues, which it then processes. The dispatcher dispatches the requests one after another, to the available work process. The actual processing takes place in the work process. When processing is complete, the result of a work process is returned via the dispatcher to the SAP GUI. The SAP GUI interprets the received data and generates the output screen for the user.
SAP Modularization
Does every ABAP/4 have a modular structure?
Yes.
What is Modularization and its benefits?
If the program contains the same or similar blocks of statements or it is required to process the same function several times, we can avoid redundancy by using modularization techniques. By modularizing the ABAP/4 programs we make them easy to read and improve their structure. Modularized programs are also easier to maintain and to update.
Name the ABAP/4 Modularization techniques.
· Source code module.
· Subroutines.
· Functions.
How can we create callable modules of program code within one ABAP/4 program?
· By defining Macros.
· By creating include programs in the library.
M is the attribute type of the module program.
Is it possible to pass data to and from include programs explicitly?
No. If it is required to pass data to and from modules it is required to use subroutines or function modules.
What are subroutines?
Subroutines are program modules, which can be called from other ABAP/4 programs or within the same program.
What are the types of Subroutines?
· Internal Subroutines: The source code of the internal subroutines will be in the same ABAP/4 program as the calling procedure (internal call).
· External Subroutines: The source code of the external subroutines will be in an ABAP/4 program other than the calling procedure.
It is not possible to create an ABAP/4 program, which contains only Subroutines (T/F).
False.
A subroutine can contain nested form and endform blocks. (T/F)
False.
Data can be passed between calling programs and the subroutines using Parameters.
What are the different types of parameters?
Formal Parameters: Parameters, which are defined during the definition of subroutine with the FORM statement.
Actual Parameters: Parameters which are specified during the call of a subroutine with the PERFORM statement.
How can one distinguish between different kinds of parameters?
· Input parameters are used to pass data to subroutines.
· Output parameters are used to pass data from subroutines.
What are the different methods of passing data?
· Calling by reference: During a subroutine call, only the address of the actual parameter is transferred to the formal parameters. The formal parameter has no memory of its own, and we work with the field of the calling program within the subroutine. If we change the formal parameter, the field contents in the calling program also changes.
· Calling by value: During a subroutine call, the formal parameters are created as copies of the actual parameters. The formal parameters have memory of their own. Changes to the formal parameters have no effect on the actual parameters.
· Calling by value and result: During a subroutine call, the formal parameters are created as copies of the actual parameters. The formal parameters have their own memory space. Changes to the formal parameters are copied to the actual parameters at the end of the subroutine.
The method by which internal tables are passed is By Reference.
16. How can an internal table with Header line and one without header line be distinguished when passed to a subroutine?
Itab[] is used in the form and endform if the internal table is passed with a header line.
What should be declared explicitly in the corresponding ABAP/4 Statements to access internal tables without header lines & why?
Work Area. This is required as the Work Area is the interface for transferring data to and from the table.
A subroutine can be terminated unconditionally using EXIT. (T/F)
True.
A subroutine can be terminated upon a condition using CHECK Statement.
Function Modules are also external Subroutines. (T/F).
True.
What is the difference between the function module and a normal ABAP/4 subroutine?
In contrast to normal subroutines function modules have uniquely defined interface. Declaring data as common parts is not possible for function modules. Function modules are stored in a central library.
What is a function group?
A function group is a collection of logically related modules that share global data with each other. All the modules in the group are included in the same main program. When an ABAP/4 program contains a CALL FUNCTION statement, the system loads the entire function group in with the program code at runtime. Every function module belongs to a function group.
What is the disadvantage of a call by reference?
During a call by reference damage or loss of data is not restricted to the subroutine, but will instantly lead to changes to the original data objects.
A function module can be called from a transaction screen outside an ABAP/4 program. (T/F).
True.
What is an update task?
It is an SAP provided procedure for updating a database.
What happens if a function module runs in an update task?
The system performs the module processing asynchronously. Instead of carrying out the call immediately, the system waits until the next database update is triggered with the ‘COMMIT WORK’ command.
The function modules are created and stored in the Function Library.
When a function module is activated syntax checking is performed automatically. (Y/N)
True.
What is the use of the RAISING exception?
The raising exception determines whether the calling program will handle the exception itself or leave the exception to the system.
What is the difference between internal tables and extract datasets?
· The lines of an internal table always have the same structure. By using extract datasets, you can handle groups of data with different structure and get statistical figures from the grouped data.
· You have to define the structure of the internal table at the beginning. You need not define the structure of the extract dataset.
· In contrast to internal tables, the system partly compresses exact datasets when storing them. This reduces the storage space required.
· Internal tables require special work area for interface whereas extract datasets do not need a special work area for interface.
It is possible to assign a local data object defined in a subroutine or function module to a field group. (T/F).
False.
What is the difference between field-group header and other field groups?
The header field group is a special field group for the sort criteria. The system automatically prefixes any other field groups with the header field group.
Can a filed occur in several field groups.
Yes. But it leads to unnecessary data redundancy.
When sorting the extract dataset the fields used as default sort key lie in the Header field group.
What does the insert statement in extract datasets do?
It defines the fields of a field group.
What does the extract statement do in extract datasets?
The data is written to virtual memory by extract commands.
A field-groups statement or an insert statement reverses storage space and transfers values. (T/F).
False.
While using extract datasets it is required to have a special workarea for interface (T/F)
False.
The LOOP-ENDLOOP on extract datasets can be used without any kind of errors (T/F)
False. It causes runtime errors.
The Maximum no of key fields that can be used in a header is 50.
While sorting field groups we cannot use more than one key field (T/F).
False.
While sorting, if the main storage available is not enough, the system writes data to an external help file. The SAP profile parameter, which determines this help file, is DIR_SORTTMP.
43. The extract statements in field groups can be used before or after processing the sort statements. (T/F)
FALSE.
Yes.
What is Modularization and its benefits?
If the program contains the same or similar blocks of statements or it is required to process the same function several times, we can avoid redundancy by using modularization techniques. By modularizing the ABAP/4 programs we make them easy to read and improve their structure. Modularized programs are also easier to maintain and to update.
Name the ABAP/4 Modularization techniques.
· Source code module.
· Subroutines.
· Functions.
How can we create callable modules of program code within one ABAP/4 program?
· By defining Macros.
· By creating include programs in the library.
M is the attribute type of the module program.
Is it possible to pass data to and from include programs explicitly?
No. If it is required to pass data to and from modules it is required to use subroutines or function modules.
What are subroutines?
Subroutines are program modules, which can be called from other ABAP/4 programs or within the same program.
What are the types of Subroutines?
· Internal Subroutines: The source code of the internal subroutines will be in the same ABAP/4 program as the calling procedure (internal call).
· External Subroutines: The source code of the external subroutines will be in an ABAP/4 program other than the calling procedure.
It is not possible to create an ABAP/4 program, which contains only Subroutines (T/F).
False.
A subroutine can contain nested form and endform blocks. (T/F)
False.
Data can be passed between calling programs and the subroutines using Parameters.
What are the different types of parameters?
Formal Parameters: Parameters, which are defined during the definition of subroutine with the FORM statement.
Actual Parameters: Parameters which are specified during the call of a subroutine with the PERFORM statement.
How can one distinguish between different kinds of parameters?
· Input parameters are used to pass data to subroutines.
· Output parameters are used to pass data from subroutines.
What are the different methods of passing data?
· Calling by reference: During a subroutine call, only the address of the actual parameter is transferred to the formal parameters. The formal parameter has no memory of its own, and we work with the field of the calling program within the subroutine. If we change the formal parameter, the field contents in the calling program also changes.
· Calling by value: During a subroutine call, the formal parameters are created as copies of the actual parameters. The formal parameters have memory of their own. Changes to the formal parameters have no effect on the actual parameters.
· Calling by value and result: During a subroutine call, the formal parameters are created as copies of the actual parameters. The formal parameters have their own memory space. Changes to the formal parameters are copied to the actual parameters at the end of the subroutine.
The method by which internal tables are passed is By Reference.
16. How can an internal table with Header line and one without header line be distinguished when passed to a subroutine?
Itab[] is used in the form and endform if the internal table is passed with a header line.
What should be declared explicitly in the corresponding ABAP/4 Statements to access internal tables without header lines & why?
Work Area. This is required as the Work Area is the interface for transferring data to and from the table.
A subroutine can be terminated unconditionally using EXIT. (T/F)
True.
A subroutine can be terminated upon a condition using CHECK Statement.
Function Modules are also external Subroutines. (T/F).
True.
What is the difference between the function module and a normal ABAP/4 subroutine?
In contrast to normal subroutines function modules have uniquely defined interface. Declaring data as common parts is not possible for function modules. Function modules are stored in a central library.
What is a function group?
A function group is a collection of logically related modules that share global data with each other. All the modules in the group are included in the same main program. When an ABAP/4 program contains a CALL FUNCTION statement, the system loads the entire function group in with the program code at runtime. Every function module belongs to a function group.
What is the disadvantage of a call by reference?
During a call by reference damage or loss of data is not restricted to the subroutine, but will instantly lead to changes to the original data objects.
A function module can be called from a transaction screen outside an ABAP/4 program. (T/F).
True.
What is an update task?
It is an SAP provided procedure for updating a database.
What happens if a function module runs in an update task?
The system performs the module processing asynchronously. Instead of carrying out the call immediately, the system waits until the next database update is triggered with the ‘COMMIT WORK’ command.
The function modules are created and stored in the Function Library.
When a function module is activated syntax checking is performed automatically. (Y/N)
True.
What is the use of the RAISING exception?
The raising exception determines whether the calling program will handle the exception itself or leave the exception to the system.
What is the difference between internal tables and extract datasets?
· The lines of an internal table always have the same structure. By using extract datasets, you can handle groups of data with different structure and get statistical figures from the grouped data.
· You have to define the structure of the internal table at the beginning. You need not define the structure of the extract dataset.
· In contrast to internal tables, the system partly compresses exact datasets when storing them. This reduces the storage space required.
· Internal tables require special work area for interface whereas extract datasets do not need a special work area for interface.
It is possible to assign a local data object defined in a subroutine or function module to a field group. (T/F).
False.
What is the difference between field-group header and other field groups?
The header field group is a special field group for the sort criteria. The system automatically prefixes any other field groups with the header field group.
Can a filed occur in several field groups.
Yes. But it leads to unnecessary data redundancy.
When sorting the extract dataset the fields used as default sort key lie in the Header field group.
What does the insert statement in extract datasets do?
It defines the fields of a field group.
What does the extract statement do in extract datasets?
The data is written to virtual memory by extract commands.
A field-groups statement or an insert statement reverses storage space and transfers values. (T/F).
False.
While using extract datasets it is required to have a special workarea for interface (T/F)
False.
The LOOP-ENDLOOP on extract datasets can be used without any kind of errors (T/F)
False. It causes runtime errors.
The Maximum no of key fields that can be used in a header is 50.
While sorting field groups we cannot use more than one key field (T/F).
False.
While sorting, if the main storage available is not enough, the system writes data to an external help file. The SAP profile parameter, which determines this help file, is DIR_SORTTMP.
43. The extract statements in field groups can be used before or after processing the sort statements. (T/F)
FALSE.
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