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OLTP Vs OLAP A multi-dimensional data model SAP BW architecture mySAP Business ApplicationsSlide 4: What is Data Warehouse? Defined in many different ways, but not rigorously. A decision support database that is maintained separately from the organization’s operational database Support information processing by providing a solid platform of consolidated, historical data for analysis. “A data warehouse is a subject-oriented , integrated , time-variant , and nonvolatile collection of data in support of management’s decision-making process.”—W. H. Inmon Data warehousing: The process of constructing and using data warehousesSlide 5: Categories of Data Warehouse: Data Warehouse ODS Data Marts Dependent Data Marts Independent data Marts EDWSlide 6: OLTP Vs OLAP OLTP (Online Transaction Processing) refers to the type of data processing typically done in an R/3 system. BW is an OLAP (Online Analytical Processing) system.Slide 7: SAP BW Data Model Data that has been loaded into BW from various source systems, is stored in BW in the form of star schemas. This type of table assignment is ideal for reporting purposes. The dimensions answer question such as "Who?" "What?" and "When?" The facts provide answers to questions such as; “how much money, how many people, how much did we pay”?Slide 8: Example : SalesSlide 9: Star SchemaSlide 10: SAP BW: Extended Star SchemaSlide 11: MDM/Star Schema and BWSlide 12: Info CubeSlide 13: SAP BW ArchitectureSlide 14: BW has a multi- level architecture to provide the maximum degree of flexibility. Bottom Layer: BW can extract and use data provided by a variety of sources. These include R/3 and R/2 systems, non-SAP systems, flat files, commercial data providers, and even other BW systems.Slide 15: Middle Layer: The BW server provides all the tools necessary to model, extract, transform, aggregate, store, and access data. Since the description of the data, regardless of its source, is contained in a common Metadata Repository, data from a variety of sources can be combined to give you enhanced data analysis options. Top Layer: BW users can access data through the SAP Business Explorer, a standard Web Browser, or third-party display tools, which have been certified for use with a common BAPI interface.Slide 16: mySAP Business ApplicationsSlide 17: The SAP Business Information Warehouse has a central position among the mySAP solutions. Typical characteristics of the individual solutions are separate development, implementation, and maintenance of the components, and independent release cycles in the different areas. BAPI and ALE technology takes care of communication between these various systems. The advantages of this architecture include quicker implementation, flexibility, openness, and extendibility.Slide 18: BW Strategy: An End-To-End Solution BW Strategy: An End-To-End So BW Strategy: An End-To-End Solution BW is a complete data warehouse solution, from the extraction of data from various source systems, to providing a set of tools for analyzing and displaying the data.Slide 19: Open Hub Service: The open hub service enables you to distribute data from an SAP BW system into external data marts, analytical applications, and other applications. Through the open hub service, SAP BW becomes a hub of an enterprise data warehouse.Slide 20: System Landscape: The System Landscape of SAP BW is similar to that of SAP R/3.Slide 22: ExtractionsSlide 23: This Section discusses the SAP BW extraction and load process of data from various source systems. Non-SAP Source systems: Data from non-SAP data sources can be loaded into SAP BW in one of the three ways. Flat file source systems (loaded through Flat Files). External source systems – connect to external systems with third- party custom extraction tools (using staging BAPIs). External data providers such as Nielsen.Slide 24: SAP Source Systems: SAP R/3 Source system (after release 3.1H). SAP BW System - using Myself. Other SAP products.Slide 25: Data Sources and Info Sources:Slide 26: Flat Files: Flat files can be used to load both Master and Transactional data from non-SAP source system into SAP BW. SAP BW can load data from 3 non-ASP Formats. 1. CSV is a Character Separated Value file type (extension .CSV). 2. ASCII is a fixed-length record format file. 3. XML files.Slide 27: Third-Party Extraction Tools: Third-party vendors of extraction products certified for SAP BW include. Acta Works for SAP from Acta Technologies Evolutionary Technology Inc. (ETI) Genio Informatica etc., External Data Providers: External data providers are suppliers of data to SAP BW (e.g., A.C. Nielsen and Dun & Bradstreet). They usually are value added services that are available. External data providers use the BAPI concept to load data into SAP BW.Slide 28: Types of extractions: Flat File Generic CO/PA LIS & LO FI/SLSlide 29: Generic Data Extraction: This extraction is used when: There is no Data Source in business content. SAP R/3 tables to be extracted from a cross-application or custom tables (Z Tables). CO/PA Data Extraction: This method is specific to the extraction of data from the CO/PA application component from SAP R/3. It collects all of the OLTP data for calculative margins (sales, cost of sales, overhead costs).Slide 30: LIS and LO Data Extraction: LIS and Lo are two very closely related application-specific extractor types. LIS (Logistics Information Systems) is a cross application component of SAP R/3 collecting supply chain information from the following : Sales Information System. Purchasing Information System. Inventory Controlling. Shop Floor Information System. Plant Maintenance Information System. Quality Management Information System.Slide 31: LIS Data Extractors suffer from limitations like Performance, Volume of data and Complexity of Usage. To remedy these limitations, SAP developed the LO data extraction method. This method is used to extract data from the LO (Logistics) application component in SAP R/3. FI/SL Data Extraction: Finance, Special Ledger (FI/SL) is another application-specific extraction method in SAP BW. It collects all of the OLTP data for Financial accounting, Special Ledger. FI/SL combines data from different levels of OLTP applications (e.g., FI/GL, EC/PCA, CO/CCA).Slide 32: Update Methods: An Update method is a scheme used to update data in SAP BW. The updates available in SAP BW are: Full Update – extract all the data from source system. Initialization - reset. Delta Update – extract only the data that have been changed or added since the last extract.Slide 33: Business Explorer (BEx)Slide 34: Contents: BEx Analyzer BEx BrowserSlide 35: BEx ComponentsSlide 36: The Business Explorer helps to analyze the data in the SAP Business Information Warehouse. BEx Analyzer: BEx Analyzer is a Microsoft Excel-based interactive environment where analyses and queries are defined by selected characteristics and key figures. BEx Browser: The BEx Browser is a graphical interface for organizing reports of SAP BW.Slide 37: BEx BrowserSlide 38: Creating a QuerySlide 39: Choosing Characteristics and Key FiguresSlide 40: SAP Business Explorer Toolbar: The SAP Business Explorer toolbar integrates SAP BW reporting functionality into Microsoft Excel.Slide 41: Sample Report:Slide 42: Some Reporting Topics: Exceptions Conditions Variables Calculated Key Figures Formulas Functions Filters Free CharacteristicsSlide 43: Q&ASlide 44: Thank You You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.