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2. An InfoSource combines quantity of information that logically belongs
together, summarized into a single unit. It prepares consolidated data
for updating to the data targets. InfoSources contain either
transaction data or master data (attributes, texts and hierarchies).
When you want to load the related data from different datasources
to the data targets, Infosource comes into picture.
Role of InfoSource in SAP BW-
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4. In BW, a DataSource is assigned to an InfoSource. If fields that logically
belong together exist in various source systems, they can be grouped
together into a single InfoSource in BW, in which multiple DataSources can
be assigned to an InfoSource.
In the BW ProcessingTransfer Rules, individual DataSource fields are
assigned to the corresponding InfoObject of the InfoSource. Here you can
also determine how the data for a DataSource can actually be transferred to
the InfoSource.The uploaded data is transformed using transfer rules. An
extensive library of transformation functions that contain business logic can
be used here to perform data cleansing and to make the data analyzable.
The transfer structure is used to transfer data to the BW system.The data is
transferred 1:1 from the transfer structure of the source system into the BW
transfer structure.
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5. If you are dealing with an InfoSource with flexible updating, then the data
is updated from the communication structure into the InfoCube into other
data targets with the aid of the Update Rules. InfoSources with direct
updating permit master data to be written directly (without update rules)
into the master data tables.
Role of infosource in SAP BI-
In contrast to 3.x InfoSources, as of Release SAP NetWeaver BI 7.0, an
InfoSource behaves like an InfoSource with flexible update
The data in an InfoSource is updated to an InfoProvider using a
transformation.
You can define the InfoObjects of the InfoSource as keys.These keys are
used to aggregate the data records during the transformation.
1. Data Flow Without an InfoSource:
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7. The DataSource is connected directly to the target by means of a
transformation.
Since there is only one transformation, performance is better.
However, if you want to connect multiple DataSources with the
same structure to the target, this can result in additional
maintenance effort for the transformation, since you need to
create a similar transformation for each DataSource.
You can avoid this if the DataSource is the same, it just appears in
different source systems. In this case, you can use source system
mapping when you transport to the target system so that only
one transformation has to be maintained in the test system.The
same transformation is created automatically for each source
system in the production system.
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