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SAP BW - DataStore Objects & Types
  • 时间:2024-11-03

SAP BW - DataStore Objects & Types


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In this chapter, we will discuss the various DataStore Objects and it sub-modules.

What is a DataStore Object?

A DSO (DataStore Object) is known as the storage place to keep cleansed and consopdated transaction or master data at the lowest granularity level and this data can be analyzed using the BEx query.

A DataStore Object contains key figures and the characteristic fields and data from a DSO can be updated using Delta update or other DataStore objects or even from the master data. These DataStore Objects are commonly stored in two dimensional transparent database tables.

DSO Architecture

The DSO component consists of the following three tables −

    Activation Queue − This is used to store the data before it is activated. The key contains request id, package id and record number. Once the activation is done, the request is deleted from the activation queue.

    Active Data Table − This table is used to store the current active data and this table contains the semantic key defined for data modepng.

    Change Log − When you activate the object, changes done to the active data are re-stored in this change log. A change log is a PSA table and is maintained in Administration Workbench under the PSA tree.

DSO Architecture

When you load the new data in to a DSO and the technical key is added to records. A request is then added to the Activation queue. It can be triggered manually or automatically.

Types of DataStore Objects

You can define the DataStore Objects into the following types −

    Standard DSO

    Direct Update DSO

    Write-Optimized DSO

Type Structure Data Supply SID Generation
Standard DataStore Object Consists of three tables: activation queue, table of active data, change log From data transfer process Yes
Write-Optimized Data Store Objects Consists of the table of Active data only From data transfer process No
DataStore Objects for Direct Update Consists of the table of Active data only From APIs No

Standard DataStore Objects

To create a standard DSO, go to the RSA Workbench.

Use T-Code: RSA1

RSA Workbench

Go to Modepng tab → InfoProvider → Select InfoArea → Right cpck and cpck on create DataStore Object.

Select InfoArea

Enter the technical name and description of the DataStore object.

Type of DataStore Object → This is used to select the DSO type. It takes a standard DSO by default.

Cpck the Create (F5) button.

DataStore Object

To change the DSO type, go to the settings tab as shown in the following screenshot. Cpck on the Edit icon and in a new window which opens, you can change the DataStore Object and also Select the Type.

Settings Tab

SID Generation

SID is generated for each master data value. Cpck on Edit to change the settings for SID generation.

SID Generation

Create a SID

You can select from the following options −

    During Reporting

    During Activation or

    Never Create SIDs

Unique Data Records − This option is used to ensure the DSO holds unique values.

Set Quapty Status to OK − This allows you to set the quapty status after the data loading has been completed.

Create SID

Key Fields and Data Fields − Key fields are used to add unique records. To add key filed, right cpck on Key fields and select InfoObject Direct Input.

Key fields

In a new window, enter the technical names on the InfoObjects and cpck Continue. You can see that the InfoObject is added under the key fields section.

Insert InfoObject

Following is the key filed InfoObject in the DSO. Once this DSO structure is complete, you can activate that DSO.

Activate DSO

Object TDSO Activated

Direct Update DataStore Objects

DataStore Object for direct update allows you to access data for reporting and analysis immediately after it is loaded. It is different from standard DSOs owing to the way how it processes the data. This data is stored in the same format in which it was loaded in to the DataStore Object for any direct update by the apppcation.

The Structure of Direct Update DSOs

These datastores contain one table for active data and no change log area exists. The data is retrieved from external systems using APIs.

The following API’s exist −

    RSDRI_ODSO_INSERT − These are used to insert new data.

    RSDRI_ODSO_INSERT_RFC − It is similar to RSDRI_ODSO_INSERT and can be called up remotely.

    RSDRI_ODSO_MODIFY − This is used to insert data having new keys. For data with keys already in the system, the data is changed.

    RSDRI_ODSO_MODIFY_RFC − This is similar to RSDRI_ODSO_MODIFY and can be called up remotely.

    RSDRI_ODSO_UPDATE − This API is used to update the existing data.

    RSDRI_ODSO_UPDATE_RFC − This is similar to RSDRI_ODSO_UPDATE and can be called up remotely.

    RSDRI_ODSO_DELETE_RFC − This API is used to delete the data.

Benefits

In direct update DSO’s, the data is easily accessible. You can access data for reporting and analysis immediately after it is loaded.

Drawbacks

    As the structure of this DSO contains one table for active data and no change log, so this doesn’t allow delta update to InfoProviders.

    As the data loading process is not supported by BI system, so DSOs are not displayed in the administration section or in the monitor.

To create a direct update DataStore, go to administration workbench. Use T-Code: RSA1

RSA1 Workbench

Go to Modepng tab → InfoProvider → Select InfoArea → Right cpck and cpck on create DataStore Object.

Create DataStore Object

Enter the technical name and description of the DataStore object.

Type of DataStore Object − This is used to select the DSO type. It takes a standard DSO by default.

Cpck on the Create (F5) button.

Object Type

To change the DSO type, go to the settings tab as shown in the following screenshot. Cpck on the Edit icon and in a new window which opens, you can change the DataStore Object and also select its Type. Select the Direct Update DataStore and then cpck Continue.

Direct Update DataStore

Once the DataStore is defined, cpck on Activate button to activate DSO.

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