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1、 Business Intelligence and Data Warehousing in SQL Server 20051.Introduction Microsoft SQL Server 2005 is a complete business intelligence (BI) platform that provides the features, tools, and functionality to build both classic and innovative kinds of analytical applications. This paper provides an
2、introduction to the tools that you will use to build an analytical application, and highlights new functionality that makes it easier than ever to build and manage complex BI systems.The following table presents an overview of the components of a business intelligence system, and the corresponding M
3、icrosoft SQL Server 2000 and SQL Server 2005 components. Two components are new for SQL Server 2005: SQL Server Management Studio and SQL Server Business Intelligence Development Studio. The other primary BI components Integration Services, Analysis Services OLAP, Analysis Services Data Mining, and
4、Reporting Services are substantially different and improved in SQL Server 2005. The SQL Server 2005 relational database contains several significant new features. Although the Microsoft Office query and portal tools are not part of SQL Server, the current releases will continue to work with SQL Serv
5、er 2005. The BI functionality in Microsoft Office will evolve with the Office product release cycle.2.Where do I start with SQL Server 2005? The first thing youll notice upon installing SQL Server 2005 is that the installation experience is integrated. No longer do you need to run the installation p
6、rogram separately for some features, such as Analysis Services. If a feature such as Reporting Services is not available for installation, your computer may not meet the installation requirements for that feature. You can review the Readme file for a complete discussion of feature prerequisites. The
7、 installation process will install: SQL Server relational database engine Integration Services Analysis Services Reporting Services SQL Server Management Studio (database management toolset) Business Intelligence Development Studio (BI application development toolset) Reporting Services requires tha
8、t IIS be installed and correctly configured. We strongly recommend that you take the time to configure and install IIS, as Reporting Services is an integral part of the SQL Server 2005 Business Intelligence feature set. Customers who are familiar with Analysis Services may be surprised by the lack o
9、f an Analysis Services metadata repository. In SQL Server 2000 the Analysis Services repository was shipped as a Microsoft Access database, but Analysis Services 2005 does not contain a metadata repository. Instead, the Analysis Services database metadata information are stored as XML files and are
10、managed by Analysis Services. These XML files can be placed under source control, if desired. We recommend that you use the Business Intelligence Development Studio to develop and the SQL Server Management Studio to operate and maintain BI database objects. You can design Integration Services packag
11、es and Analysis Services cubes and mining models in the SQL Server Management Studio, but the Business Intelligence Development Studio offers a better experience for designing and debugging BI applications. You will probably learn more by beginning with a new application rather than upgrading existi
12、ng DTS packages and Analysis Services databases. You may find it useful to recreate an existing package or database, if you have one available. After you have become more familiar with the new tools, features, and concepts, it is easier to upgrade existing objects.Many customers will use the SQL Ser
13、ver tools to develop a system with the now-familiar business intelligence structure of one or more source systems using Integration Services to feed a dimensional relational data warehouse, which in turn is used to populate the Analysis Services database. However, SQL Server 2005 provides many optio
14、ns to deviate from this generic design, by eliminating or virtualizing different components.3.Relational data warehousing The SQL Server 2005 relational database engine contains several features of great interest for the design and maintenance of data warehouse style applications. These features inc
15、lude: Table partitions enable fast data load and simplified maintenance for very large tables.Easy creation of a reporting server Transact-SQL improvements including new data types and new analytic functionsOnline index operations Fine grained backup/restore operations Fast file initialization4.Repo
16、rting Server A common technique for offloading relational operational reporting from the transaction database is to maintain a reporting server. The reporting server maintains an image of the transaction database with some latency, most often of the previous day. The reporting server is used for most reporting and data warehouse extracts. Microsoft SQL S
