SAP BW310官方教程：数据仓库入门指南

BW310

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Unit 1: Data Warehousing: Overview BW310

Lesson: SAP Business Information Warehouse

Lesson Overview

This lesson deals with the fundamental structures of the SAP Business Information

Warehouse (SAP BW). It also looks at how SAP BW is embedded in the SAP

landscape and its openness vis-a-vis external systems and databases.

Lesson Objectives

After completing this lesson, you will be able to:

• describe the fundamental structures of SAP BW.

• describe the architecture of SAP BW and mention its advantages.

• outline the different SAP OLAP tools

• explain the different options available to load data into SAP BW.

• explain how SAP BW is positioned as a component of mySAP Business Suite

and SAP Net Weaver.

Business Example

YouplantoimplementSAP BW as your ce ntral data warehouse. You need

a comprehensive overview of the structures and important terms in the SAP

BW system in order to be able to use the avaialble functions. You can use this

information to integrate SAP BW into your data processing world.

SAP Business Information Warehouse:Introduction

The SAP Business Information Warehouse (SAP BW) enables you to analyze

data from operative SAP applications and from other business applications and

external data sources such as databases, online services, and the Internet. SAP BW,

which is pre-configured for core areas and processes, allows you to examine the

relationships in all a reas of your organization.

The following needs were t aken into account when designing SAP BW:

• A data warehousing system with optimized data structures for reporting

and analysis

• A separate system

• OLAP engine and tools

• Based on a comprehensive data warehouse architecture

• Automated data warehouse management

• Preconfigured with SAP global business know-how

BW310 Lesson: SAP Business Information Warehouse

Source Sy stems

A s ource system is a system that provides the SAP BW system with data. SAP BW

distinguishes between four kinds of source systems:

• mySAP Business Suite components: SAP BW is fully integrated into the

mySAP Business Suite . It functions as a central data warehousing tool.

Predefined extraction structures and programs are de livered by SAP. These

allow source data from mySAP Business Suite components to be loaded

directly into the SAP BW system.

Complex organizational structures in which data from individual systems

is collected, create a need for a system architecture consisting of several

BW systems. These temporarily s tore data in the detailed form of an

organizational unit, before they can then be transferred to a central SAP BW

for carrying out comprehensive reporting.

• You can send data from SAP and non-SAP sources to SAP BW using SAP

Exchange Infrastructure (SAP XI). In SAP BW the data is placed in the

delta queue and is available there for further integration and consolidation.

Data transfer using SAP XI is SOAP-based. SAP XI is based on general

standards so as to enable external systems to be integrated. At the center of

the infrastructure is an XML-based communication that uses HTTP (Hyper

Text Transfer Protocol). The application-specific contents are transferred in

messages in user-defined XML (eXtensible Markup Language) schema from

the sender to the receiver using the Integration Server.

• Non-SAP systems: A big advantage of SAP BW lies in the fact that is has

an open architecture vis-a-vis external OLTP providers and other legacy

systems. Particularly in a heteroge nous system landscape, it is thus possible

to use SAP BW as a consolidated data basis for reporting that covers the

entire organization. SAP delivers various tools which allow these interfaces

to be implemented quickly and efficiently. These are looked at next.

• Data providers: As well being able to obtain data from a variety of

available systems, SAP BW can a lso be supplied with target-orientated data

from providers. For example, the organizations AC Nielsen US or Dun &

Bradstreet provide market research data, which can be loaded into SAP BW

for benchmarking and then measured against your own operative data. The

interface for the transfer of data supplied by the data providers is already

available in SAP BW. This means the d ata import can run smoothly.

• Databases: SAP BW allows data to be loaded from external relational

database systems. A DataSource is generated based on the external table

structure, enabling table content to be loaded quickly and consistently into

SAP BW.

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