(GLUE-1806) SAP to Storage
This is an abstract description of the extraction route as a process by which data is inserted into a target storage. The storage can be any technology capable of storing data which is supported by Datavard Storage Management.
Extraction process for an SAP to Storage extraction
During data extraction process are occurring the following important processes:
Data manipulation
Each extraction process uses data packages. We transfer data in packages of defined size, in a one by one order to a storage.
A transfer of one package to a storage is a cycle of processes. The first process is Data manipulation which is composed of two main parts: data selection and data transformation.
Data selection
Firstly, you define the origin of data as a technical source. The source can be represented by a DB table or a BW object. You must also choose a delta type to apply business-relevant requirements for this selection.
And finally, you must also define the so-called 'Variant' which specifies additional conditions for data (e.g. package size).
Data transformation
Source data doesn't always have the required form for the transfer. The user can use our Rules to specify the final data.
Rules are used for data transformation. Rules do not specify data selection and cannot influence the data amount. Their only purpose is to change data, so they correspond to the business requirements (extraction scenario).