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SAP Business Warehouse

By: Sanjeet Kumar

Overview:

During all business activities, companies create data. In all areas of the company, employees use this data as a basis for making decisions.

SAP NetWeaver BW allows you to group together and format large amounts of business data in an Enterprise Data Warehouse.

By analyzing the data with the BI tools in SAP BEx, supported by Enterprise Planning tools, you can find important information to support the decision-making process in your company.

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Difference Between SAP R/3 and BW

The transaction-orientated OLTP and the analysis orientated OLAP environmentmust be considered as a single entity. The data for the business processes produces a multitude of information that can not easily be used for targeted analysis. Therefore, the data is firstly cleansed, then technically and semantically prepared.

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Comparison detail

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Minimum Requirement of H/W and S/W

Hardware Requirements

Processor: Pentium 4, 2.8 GHz,1 GB memory 40 GB HDD.

Software Requirements Windows XP

OS : Windows XP ( SP2 or SP3 )Browser : min. IE 6.0Excel : 2002, 2003 and 2007.NET framework 2.0

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Integration Architecture :

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Data Warehouse Architecture :

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ETL part of BW:

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Data BasisAdditional heterogeneous data can be loaded via extractors:. Flat files: A flat file in ASCII or CSV format can automatically be read bythe SAP BW standard. XML: XML data can also be processed in SAP BW.

Data Staging Tools. DB Connect: Allows relational databases to be accessed directly. Here, SAPDB Multi Connect is used to create a connection to the database managementsystem (DBMS) in the external database ETL tools: In heterogeneous system landscapes, an important requirement isthat the different data structures and content are consolidated before beingloaded into SAP BW. You can use an ETL tool to load data from heterogeneoussystems, such as Siebel and PeopleSoft, transform this data into a singleformat and then load it via a Business Programming Interface into SAP BW.. UD Connect: Using UD Connect, you can access just about all relationaland multi-dimensional data sources. UD Connect transfers the data as flatdata. Multi-dimensional data is converted to a flat format when UD Connectis used.

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Interfaces

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SAP BW Business Explorer

The Business Explorer (BEx) is a SAP BW component that provides flexiblereporting and analysis tools that you can use for strategic analysis and supportingthe decision-making process in your organization. These tools include query, reporting and OLAP functions. The BEx enables a broad range of users to access SAP BW information: Using the Enterprise Portal, Intranet/Internet (Web Application Design) or using mobile end devices (WAP or i-mode enabled mobile telephones, and personal digital assistants).

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The SAP BW Star Schema Concept

This database schema classifies two groups of data: facts (sales or quantity, for example) and dimension attributes(customer, material, time, for example). Facts are the focus of the analysis of a business. activities. The fact data (values for the facts) are stored in a highly normalized fact table. The values of the dimension attributes are stored in various denormalized dimension tables (from a semantical point of view: dimensions): Here, logically related dimension attributes are stored as a hierarchy(parent-child relationships) within the dimension table. The dimension tables are linked relationally with the central fact table by way of foreign or primary key relationships. The dimensional attribute with the finest level of detail of the corresponding dimension table is a foreign key in the fact table. In this way, all data records in the fact table can be identified uniquely.

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The SAP BW Star Schema Concept

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The SAP BW Star Schema Concept

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Basic CubeBasic Cubes are the central objects of the multi-dimensional model in SAP BW. Reports and analyses are based on these. From a reporting perspective, a Basic Cube describes a self-contained data set within a business area, for which you can define queries. A Basic Cube consists of a quantity of relational tables arrangedmulti-dimensionally, meaning that it consists of a central fact tablesurrounded by several dimension tables. SID tables link these dimensiontables to their respective master data tables.

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Master Data Tables/SID TablesAdditional information about characteristics is referred to as master data in theSAP BW system. A distinction is made between the following master data types:AttributesTexts(External) HierarchiesMaster data information is stored in separate tables, that is independent ofthe dimension tables, in what are called master data tables (separately forattributes, texts and hierarchies).

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Advantages of the SAP BW Star Schema

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Advantages:The use of automatically generated INT4 keys I (SID keys,

DIMIDkeys) enables faster access to data than via long alpha-

numeric keys.Thanks to the excavation of master data from the

dimension tablesusing the SID technique, the following modeling

possibilities exist :Historizing dimensions

Multi-lingual capabilityCross-Basis Cube use of master data (→ shared

dimensions.)The query performance is improved here as aggregated

key figures can be stored in their own fact tables.

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Administrator Workbench

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• Modelling• Monitoring• Reporting Agent• Transport Connection• Documents• Business Content• Translation• Metadata Repository

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Modelling

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Info ObjectsInfo Objects contain the technical and specialist information for master and transaction data in SAP BW. These enable information to be modelled in a structured form in SAP BW. Info Objects are used for the definition of reports, to evaluate master- and transaction data.

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Advantages:

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Cross-Application Visibility into Business Process Performance.  We can pull data from various SAP Applications.

Permanent data storage SAP BW data warehouse is an excellent way to store after transactional data generation.

Improved Customer Service Levels.  Lose baggage a lot.  Not sure why or how.  A data warehouse is an excellent detective tool.

Increased Capacity Utilization Rates.  You are going to need a data warehouse to attack all the elements of the problem. 

Proactive Decision Making  Enabled by Real-Time Data. SAP BW can be a much effective in Real Time reporting and decision making.

Configuration problems with SAP R/3 get Surfaced Quickly.  Already Runs a Retail Operation, T-mobiles .  

Marketing, Sales & Operations Planning Work Better with Better Data.  Forecast accuracy can be done. 

Bad data is Quickly Identified by SAP BW.  Loss every year due to bad data, this is really one of the top benefits of SAP BW.

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