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8 Cards in this Set
- Front
- Back
- 3rd side (hint)
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DataSource
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Data is transferred into SAP BW in a flat structure, that is, a table, rather than a multidimensional
data structure. DataSources contain the definitions of source data. |
Data is transferred into SAP BW in a flat structure,
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PSA
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Persistent Staging Area (PSA): In the SAP BW information model, data is physically stored in the PSA object, a transparent database table. A PSA is the initial storage area of data,
where requested data is saved unchanged from the source system according to the structure defined in the DataSource. |
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InfoSource
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InfoSource: InfoObjects that belong together logically
– from a business point of view – are grouped into Info- Sources. InfoSources (and their underlying InfoObjects) can be “filled” with any data from within the enterprise or from external sources. (See “Extraction, Transformation, and Loading (ETL)” below.) They can hold both transactional data and master data. Transactional data is generated from transactions in an Online Transaction Processing system (OLTP), such as SAP R/3; it is “quantifiable;” and it can be granular. Master data, such as a customer address or an organizational structure, typically remains unchanged over a long period. Master data in SAP BW includes attributes, texts, and hierarchies. |
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ODS object
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SAP BW uses ODS object technology to build
the operational data store (ODS) layer and the data warehouse layer. The ODS object describes a consolidated dataset from one or several InfoSources. In contrast to the multidimensional data models of InfoCubes, data in ODS objects is stored in flat, transparent database tables. ODS object data can be updated into InfoCubes or other ODS objects using a delta update. Data in an ODS object can be analyzed with the SAP BW Business Explorer (BEx) tool, the business intelligence suite of mySAP BI. |
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InfoCubes
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InfoCubes are containers that organize data around its
multidimensionality in terms of business dimensions. This means that users can analyze information from various business perspectives, such as geographic region or type of sales channel. InfoCubes can be accessed by the SAP BW Business Explorer for reporting and OLAP (Online Analytical Processing) analysis. (See the “Multidimensional Models and Aggregates” section below.) |
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ETL
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In many companies, data is fragmented and spread across
dozens, if not hundreds, of databases and applications. Decision makers need information to develop a comprehensive view of the company and to answer key business questions accurately and completely. To be useful, data must be integrated, standardized, synchronized, and enriched. This is done through processes known as extraction, transformation, and loading |
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Data Aging
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The Strategy for Data Aging
In today’s business environment, a sound approach to data warehousing must include a data-aging strategy. That’s increasingly important because large amounts of data are generated and used for everything from managing the supply chain to managing customer relationships. Older data may be accessed less frequently, but it is still useful. As a result, older data must be stored and kept available, which can be an expensive undertaking if traditional disk storage is used. |
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BAPI
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Business Application Programming Interface (BAPI)
Standard R/3 interface that enables the integration of thirdparty software into the R/3 System. BAPIs are defined in the Business Object Repository (BOR) as methods applied to SAP business objects, in order to perform specific business tasks. |
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