Microsoft SQL Server 2005 Developer’s Guide- P1

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Microsoft SQL Server 2005 Developer’s Guide- P1:This book is the successor to the SQL Server 2000 Developer’s Guide, which was extremely successful thanks to all of the supportive SQL Server developers who bought that edition of the book. Our first thanks go to all of the people who encouraged us to write another book about Microsoft’s incredible new relational database server: SQL Server 2005.

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Nội dung Text: Microsoft SQL Server 2005 Developer’s Guide- P1

Introduction xix Overall, the new features in SQL Server 2005 give it a very high return on investment. Features like web services provide better connectivity to customers, paving the way to improved profitability. Likewise, XML integration enables better integration with business partners for improved profitability. Additionally, the inclusion of the .NET Framework, improved management tools, and Report Services empower employees, enabling them to be more productive. A Brief History of Microsoft SQL Server SQL Server 2005 is the latest version of a database server product that has been evolving since the late 1980s. Microsoft SQL Server originated as Sybase SQL Server in 1987. In 1988, Microsoft, Sybase, and Aston-Tate ported the product to OS/2. Later, Aston-Tate dropped out of the SQL Server development picture, and Microsoft and Sybase signed a co-development agreement to port SQL Server to Windows NT. The co-development effort cumulated in the release of SQL Server 4.0 for Windows NT. After the 4.0 release, Microsoft and Sybase split on the development of SQL Server; Microsoft continued forward with future releases targeted for the Windows NT platform while Sybase moved ahead with releases targeted for the UNIX platform, which they still market today. SQL Server 6.0 was the first release of SQL Server that was developed entirely by Microsoft. In 1996, Microsoft updated SQL Server with the 6.5 release. After a two-year development cycle, Microsoft released the vastly updated SQL Server 7.0 release in 1998. SQL Server 7.0 embodied many radical changes in the underlying storage and database engine technology used in SQL Server. SQL Server 2000, the accumulation of another two-year development effort, was released in September of 2000. The move from SQL Server 7.0 to SQL Server 2000 was more of an evolutionary move that didn’t entail the same kinds of massive changes that were made in the move from 6.5 to 7.0. Instead, SQL Server 2000 built incrementally on the new code base that was established in the 7.0 release. Starting with SQL Server 2000, Microsoft began releasing updates to the basic release of SQL Server in the following year starting with XML for SQL Server Web Release 1, which added several XML features including the ability to receive a result set as an XML document. The next year they renamed the web release to the more succinctly titled SQLXML 2.0, which, among other things, added the ability to update the SQL Server database using XML updategrams. This was quickly followed by the SQLXML 3.0 web release, which included the ability to expose stored procedures as web services. Two years later, Microsoft SQL Server release history cumulates with the release of SQL Server 2005. SQL Server 2005 uses the same basic architecture that was established with SQL Server 7 and it adds to this
xx M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e all the features introduced with SQL Server 2000 and its web releases in conjunction with the integration of the .NET CLR and an array of powerful new BI functions. The following timeline summarizes the development history of SQL Server: 1987 Sybase releases SQL Server for UNIX. 1988 Microsoft, Sybase, and Aston-Tate port SQL Server to OS/2. 1989 Microsoft, Sybase, and Aston-Tate release SQL Server 1.0 for OS/2. 1990 SQL Server 1.1 is released with support for Windows 3.0 clients. Aston-Tate drops out of SQL Server development. 1991 Microsoft and IBM end joint development of OS/2. 1992 Microsoft SQL Server 4.2 for 16-bit OS/2 1.3 is released. 1992 Microsoft and Sybase port SQL Server to Windows NT. 1993 Windows NT 3.1 is released. 1993 Microsoft and Sybase release version 4.2 of SQL Server for Windows NT. 1994 Microsoft and Sybase co-development of SQL Server ofﬁcially ends. Microsoft continues to develop the Windows version of SQL Server. Sybase continues to develop the UNIX version of SQL Server. 1995 Microsoft releases version 6.0 of SQL Server. 1996 Microsoft releases version 6.5 of SQL Server. 1998 Microsoft releases version 7.0 of SQL Server. 2000 Microsoft releases SQL Server 2000. 2001 Microsoft releases XML for SQL Server Web Release 1 (download). 2002 Microsoft releases SQLXML 2.0 (renamed from XML for SQL Server). 2002 Microsoft releases SQLXML 3.0. 2005 Microsoft releases SQL Server 2005 on November 7th, 2005.
CHAPTER The Development 1 Environment IN THIS CHAPTER SQL Server Management Studio BI Development Studio 1 Copyright © 2006 by The McGraw-Hill Companies. Click here for terms of use.
2 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e W hen it comes to server management, a lot has changed for the DBA in SQL Server 2005. The administrative tools that were used to manage the previous versions of SQL Server have been replaced, and new management tools have been added to help the DBA interact more efficiently with the database server. In this chapter, we’ll first take a look at the new SQL Server Management Studio, which combines, into one integrated environment, the four previous tools: Enterprise Manager, Query Analyzer, Profiler, and Analysis Manager. While each of these tools allowed the DBA to perform their specific tasks, switching between the tools and remembering different interfaces and syntax could create unneeded headaches. By having one management environment, the DBA can focus on managing the server objects more efficiently. The second part of this chapter will explore the new Business Intelligence (BI) Development Studio. The BI Development Studio is an integrated development environment used to create Analysis Services databases, DTS packages, and Reporting Services reports. You can organize components into projects and solutions in the BI Development Studio in a disconnected mode, and then deploy the solutions at a later time. SQL Server Management Studio The SQL Server Enterprise Manager, which was the primary management tool for SQL Server versions 7 and 2000, has been replaced by the new SQL Server Management Studio, which also replaces the Query Analyzer tool, which was the core T-SQL development tool in SQL Server versions 7 and 2000. SQL Server 2005 also includes several other administrative tools, such as the new Administration Console, the Database Tuning Adviser, and the Profiler. The SQL Server Management Studio is accessed using the Start | Programs | Microsoft SQL Server | SQL Server Management Studio menu option. You can see the SQL Server Management Studio in Figure 1-1. The SQL Server Management Studio can be used to manage SQL Server 2005 systems as well as SQL Server 2000 and SQL Server 7 systems; however, it cannot be used on SQL Server 6.5 or older systems. You can use the previous SQL Server 7/2000 Enterprise Manager to manage a new SQL Server 2005 system, but this isn’t supported or recommended because of some architectural changes between the two releases. Likewise, the older management tools cannot access any of the new features that have been added to SQL Server 2005. The SQL Server Management Studio is the best choice for managing mixed SQL Server 2005 and SQL Server 7/2000 systems. The SQL Server Management Studio has been completely rewritten and now uses the latest Microsoft technologies, like Winforms and the .NET Framework.
Chapter 1: The Development Environment 3 Figure 1-1 SQL Server Management Studio This allows you to write, edit, run, and debug code, and it supports the creation of solution projects. It is also integrated with Visual SourceSafe for source code version control. It doesn’t allow you to compile VB.NET, C#, J#, or VC++, like the Visual Studio 2005 development environment; instead, SQL Server Management Studio works with T-SQL, MDX, and DTS. The SQL Server Management Studio User Interface One of the important improvements the SQL Server Management Studio offers over the SQL Server Enterprise Manager lies in its use of dialog boxes. The displayed dialog boxes are now nonmodal, which means that you are not required to respond to the dialog before you can do anything else. In the older SQL Server Enterprise, if you opened a dialog, you couldn’t do anything else until the dialog was closed. The new nonmodal dialogs used by the SQL Server Management Studio solve this
4 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e problem and make it possible for the DBA to perform other management tasks while one of the dialogs is displayed. Another important enhancement in the SQL Server Management Studio is how it deals with large numbers of database objects. In the previous versions of SQL Server, the SQL Server Enterprise Manager always enumerated all of the database objects when it connected to a registered server. This wasn’t a problem for most small and medium-sized businesses, as their databases tended to be smaller in size. However, for companies with very large databases, which could contain thousands of database objects, the SQL Server Enterprise Manager could take a very long time listing all of the database objects and their properties. This basically left the SQL Server Enterprise Manager unusable until all of the objects were listed. With SQL Server 2005, the SQL Server Management Studio loads objects asynchronously, allowing the user to start to expand a database item that has many children, while at the same time performing other activities in the user interface. SQL Server Management Studio User Interface Windows This section gives you an overview of the SQL Server Management Studio user interface windows, including: The Registered Servers window The Object Explorer window The Solutions Explorer window The Properties window The Query Editor window The Results window Registered Servers As with the previous SQL Server Enterprise Manager, you must register servers in the SQL Server Management Studio before you can use it to manage them. To register new SQL Server systems, you use the SQL Server Management Studio’s Registered Servers window (shown in the upper left-hand corner of Figure 1-1). You can also use the Registered Servers window to group common servers together into logical server groups. You can connect to and manage any SQL Server component using the SQL Server Management Studio, including instances of the Database Engine, Analysis Services, Reporting Services, Integration Services, and SQL Server Mobile Edition.
Chapter 1: The Development Environment 5 You register a new SQL Server system in the Registered Servers window by right- clicking the window and selecting the New | Server Registration option from the context menu. Likewise, you can create a new server group by right-clicking in the Registered Servers window and selecting the New | Server Group option from the context menu. The Registered Servers window also allows you to export or import registered servers information. This enables you to quickly populate the Registered Servers windows of other SQL Server Management Studios without having to manually reregister all of the managed servers. Object Explorer The Object Explorer window of SQL Server Management Studio allows you to connect to any of the SQL Server components. The Object Explorer window, shown in the lower left-hand corner of Figure 1-1, provides a tree-structured folder view of all the objects in the server and displays a user interface to manage the objects. The folders displayed under each server connection type are specific to the functions of the server. Table 1-1 describes the server types and their respective main folders. The first thing you need to do in order to use Object Explorer is connect to a server type. You click the Connect button on the Object Explorer toolbar and choose the type of server from the drop-down list, which opens the Connect To Server dialog box as shown in Figure 1-2. You must provide at least the name of the server and the correct authentication information to connect to the server. You can optionally specify additional connections in the Connect To Server dialog, and the dialog will retain the last used settings. To work with the objects that are displayed in the Object Explorer, you right-click the desired object in the Object Explorer tree to display the object’s context menu. The context menu provides a unique set of options for each of the different objects. For instance, the SQL Server | Databases folder displays a context menu that allows you to create, attach, back up, restore, copy, and generate scripts for a database; while the SQL Server | Databases | Tables | table context menu allows you to create, modify, open, rename, delete, or generate a script; to define a full-text index; and to view dependencies for a table. Generating Scripts A very useful enhancement in SQL Server Management Studio is the ability to generate scripts for database objects. You can create scripts using Object Explorer or by using the Generate SQL Server Scripts Wizard. Object Explorer allows you to easily create scripts for an entire database, or for a single database object. You have the option of creating the script in a Query Editor window, to a file, or to the clipboard. The types of scripting options presented are dependent on the type of database object you choose to script. For example, if you
6 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e Server Type Main Folder Description SQL Server Databases This folder contains the System Databases folder, the Database Snapshots folder, and any User Database folders. The objects that are contained in each database are in their own folders and include tables and views, synonyms, stored procedures, functions, triggers, assemblies, types, rules, defaults, users, roles, schemas, and symmetric keys. Security This folder contains the Logins, Server Roles, Linked Servers, and Credential folders. The objects in these folders are available to the entire server, not just to a single database. DTS 2000 Packages Folder for SQL Server 2000 DTS migration packages. Notification Services You can start an instance of Notification Services that allows you to perform maintenance tasks and update notification applications in your environment, including: managing and monitoring security and permissions; starting and stopping instances and applications; backing up of application databases and definitions; updating application features; and moving, upgrading, or deleting instances of Notification Services. Replication This folder contains information about Replication publications and subscriptions. Management This folder contains the SQL Server Logs, Backup Devices, Server Triggers, and Maintenance Plans folders. It also has the Activity Monitor, SQL Mail, and Database Mail nodes. Support Services This folder contains a tool for monitoring the Distributed Transaction Coordinator and Full-Text Search. SQL Server Agent This folder contains the Jobs, Alerts, Operators, Proxies, and SQL Agent Error Logs folders. The SQL Server Agent is displayed only to members of the sysadmin role. Analysis Server Databases This folder contains the SQL Server 2005 Analysis Services (SSAS) databases. You can manage existing databases; create new roles and database assemblies; and process cubes, dimensions, and mining structures. Assemblies This folder contains the server assemblies information. Integration Services Running Packages This folder contains the opened and running SQL Server 2005 Integration Services (SSIS) packages. Stored Packages This folder contains links to all the SSIS packages stored in the file system or in the msdb database. Report Server You can manage one or more report servers in a workspace. The report servers are denoted as a node in the object hierarchy structure. SQL Server Mobile This folder contains a limited set of SQL Server nodes that includes: Tables, Views, Programmability, and Replication. Table 1-1 Server Types
Chapter 1: The Development Environment 7 Figure 1-2 The Connect To Server dialog box choose to script an entire database, the CREATE and DROP scripting options are available. However, if you choose to script a view, the CREATE and DROP scripting options are available, as well as ALTER, SELECT, INSERT, UPDATE, and DELETE. To script an object using Object Explorer, right-click the object and then select Script as an option from the context menu. The Generate Scripts Wizard can be used and will walk you through the process of creating scripts. The wizard allows you to select a variety of objects to be scripted at once instead of selecting each object individually. It contains a variety of options for generating scripts, including permissions, collation, and constraints. The wizard is useful when you need to create scripts for a large number of objects. There are two ways to launch the Generate Scripts Wizard. The first way to open the Generate Scripts Wizard is by right-clicking an instance of a SQL Server Database Engine and selecting the Launch Wizard option. Then select the Generate Scripts option from the next context menu displayed. The second way is to expand the Databases folder in Object Explorer and right-click a database. Select the Tasks option from the context menu, and then select Generate Scripts. The Summary screen of the Generate Scripts Wizard is shown in Figure 1-3. Summary Pages When you select an item in Object Explorer, information about that object is presented in a document window called the Summary Page. You can configure the SQL Server Management Studio to display the Summary Page automatically, or you can disable the display of the Summary Page. To configure the display option for the Summary Page, click the Tools | Options option from the Management Studio menu. On the Environment/General page, select Open Object Explorer from the At Startup drop-down box to display the Summary Page when
8 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e Figure 1-3 Generate Scripts Wizard SQL Server Management Studio opens. Any other choice from the drop-down box will set the Summary Page to not be displayed automatically. The Summary Page displays information about the currently selected object of the Object Explorer window. The Summary Page for the columns of a table in a database can be seen in Figure 1-4. Solution Explorer The Solution Explorer is an important management tool that is provided as a part of the SQL Server Management Studio. You can see the Solution Explorer in the upper right-hand corner of Figure 1-1. The Solution Explorer is used to provide a hierarchical tree view of the different projects and files in a solution. A solution
Chapter 1: The Development Environment 9 Figure 1-4 Summary Page can include one or more projects, in addition to files and metadata that help define the solution as a whole. A project is a set of files that contain connection information, query files, or other miscellaneous and related metadata files. Figure 1-5 shows the Solutions Explorer window. The types of projects you can have in your solution include: SQL Server Scripts, SQL Mobile Scripts, and Analysis Services Scripts. SQL Server Scripts The SQL Server Scripts projects are used to group together related SQL Server connections and T-SQL scripts. A common use for this type of project is to group together Data Definition Language (DDL) queries that define the objects in your database. Analysis Server Scripts Analysis Server Scripts projects are intended to contain Analysis Server connections as well as MDX, DMX, and XMLA scripts. One way you can use this type of project is to have one project contain the scripts that create your data warehouse and another project contain the scripts to load your data warehouse.
10 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e Figure 1-5 Solution Explorer SQL Mobile Scripts SQL Mobile Scripts projects are used to group together the connections and queries for a SQL Server CE database. For a SQL Server CE project, a connection object represents the connection to the CE database. The top item listed in the Solution Explorer is the name of the SQL Server Management Studio solution. By default this name is Solution 1, but you can change this to whatever name you want by right-clicking the solution and selecting Rename from the context menu. The files that are listed in the Solution Explorer can be associated with a project, or else they can be associated with the SQL Server Management Studio solution itself without an intermediate project. Properties Window The Properties window allows you to view the properties of files, projects, or solutions in SQL Server Management Studio. You can see the Properties window in the lower right-hand corner of Figure 1-1. If the Properties window is not already displayed, you can show it by selecting the View | Properties Window option from the Management Studio menu. The Properties window displays different types of
Chapter 1: The Development Environment 11 editing fields, depending on the type of object selected. Properties shown in gray are read-only. A Properties dialog is also available that permits you to view the properties of database objects. To display the Properties dialog, right-click a database object and select Properties from the context menu. An example of a Properties dialog is shown in Figure 1-6. Query Editor The Query Editor is the replacement for Query Analyzer found in previous versions of SQL Server. It allows you to write and run T-SQL scripts, MDX, DMX, XMLA queries, or mobile queries. You can see the Query Editor in the upper-middle portion of Figure 1-7. You start the Query Editor from the SQL Server Management Studio by selecting the New Query option on the Management Studio main page and choosing the query Figure 1-6 Properties dialog box
12 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e Figure 1-7 Query Editor type to create. Unlike the Query Analyzer, which always worked in connected mode, the new Query Editor has the option of working in either connected or disconnected mode from the server. By default it automatically connects to the server as soon as you opt to create a new query. Like its Visual Studio 2005 counterpart, the Query Editor supports color-coded keywords, visually shows syntax errors, and enables the developer to both run and debug code. In addition, the Query Editor supports the concept of projects, where groups of related files can be grouped together to form a solution. The new Query Editor also offers full support for source control using Visual SourceSafe. It is able to display query results in a grid or as text, and it is able to graphically show a query’s execution plans. There is also an option to save your scripts using the built-in SourceSafe version control. Version control facilitates group development by preventing multiple developers from simultaneously changing the same module. Source code must be checked out of the code repository before it can be modified
Chapter 1: The Development Environment 13 and then checked back in, giving you a central location to store your database code. Using version control with your database creation scripts provides a valuable method for isolating the source code associated with each release of your database schema. This can also act as a basis for comparing the schema of a deployed database to the expected schema that’s been saved using version control. Query Editor also has the capability to graphically represent a query’s execution plan. The Execution Plan option graphically displays the data retrieval methods chosen by the Query Optimizer. Figure 1-8 shows the execution plan for the query shown in Figure 1-7. Results Window The results of the queries that are executed in the Query Editor are displayed in the SQL Server Management Studio’s Results window. You can see the Results window in the lower-middle portion of Figure 1-7. You can set the Results window to display query results either in text format or in a grid. Figure 1-8 Execution plan
14 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e SQL Server 2005 Administrative Tools This section gives you an overview of the SQL Server 2005 administrative tools, including: Proﬁler enhancements Database Tuning Advisor Assisted editors Profiler Enhancements With SQL Server 2005, Profiler gets an overhaul as well. The new Profiler now supports the ability to trace both SSIS and Analysis Services commands. SQL Server 2000 was limited to tracing relational database calls only. By having these capabilities, you can use these traces to debug any problems you have in these additional components of SQL Server. Also, Performance Monitor correlation works with these new trace types. Profiler allows you to save the trace file as XML. Furthermore, a traced ShowPlan result can be saved as XML and then loaded into Management Studio for analysis. The Profiler is described in detail in Appendix A. Database Tuning Advisor Profiler also integrates with the new Database Tuning Advisor, which replaces the Index Tuning Wizard. The DTA has a rich, new interface and works with the newer features in SQL Server 2005; for instance, it will recommend partitioning your tables using the new table partitioning features in the database engine. Assisted Editors Management Studio contains new capabilities, called assisted editors, to make writing stored procedures, views, and functions easier. Instead of having to manually create the header information for these types of objects, you can use the assisted editors to quickly point and click to set information. BI Development Studio While SQL Server Management Studio is used to develop relational database projects and administer and configure existing objects in SQL Server 2005, the new Business Intelligence (BI) Development Studio is used to create Business Intelligence solutions.
Chapter 1: The Development Environment 15 Unlike the SQL Server Management Studio, the BI Development Studio is not really designed to be an administrative tool. You use the BI Development Studio to work with Analysis Services projects, to develop and deploy Reporting Services reports, and to design Integration Services (SSIS) packages. The BI Development Studio is accessed using the Start | Programs | Microsoft SQL Server | Business Intelligence Development Studio menu option. You can see the BI Development Studio in Figure 1-9. The BI Development Studio, like the SQL Server Management Studio, is built on the Visual Studio 2005 IDE. It provides a solution-oriented development environment and contains one or more projects in a solution. BI Development Studio enhances the development of business intelligence applications by allowing project development in a source-controlled, multiuser environment without requiring an active connection to a server. Each of the project types will contain the specific object definitions for those projects. For example, a Reporting Services project will contain Report definitions, while an SSIS project will contain SSIS package objects. Like the SQL Server Figure 1-9 Business Intelligence Development Studio
16 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e Management Studio, the BI Development Studio doesn’t allow you to compile VB.NET, C#, J#, or VC++. Instead, the BI Development Studio is designed expressly for working with BI projects like SSIS and Reporting Services. The BI Development Studio is also integrated with Visual SourceSafe for source code version control. The Business Intelligence Development Studio User Interface The Business Intelligence Development Studio user interface is an excellent environment for developing business intelligence solutions, including cubes, data sources, data views, reports, and data transformation packages. BI Development Studio User Interface Windows This section gives you an overview of the BI Development Studio user interface main windows, including: The Designer window The Solutions Explorer window The Properties window The Toolbox window The Output window The Designer Window The Designer window provides a graphical view of an object and is the central window in the BI Development Studio. A different designer type inhabits the designer window in response to the current BI Development Studio object type. For example, if you are developing an SSIS package, the Designer window provides the design surface to drag and drop objects from the Control Flow toolbox to the project, while the Report Designer provides the design surface to create and preview reports. Solution Explorer Like the SQL Server Development Studio, the BI Development Studio has a Solution Explorer window. The Solution Explorer is shown in the upper right-hand corner of the screen shown in Figure 1-9. The Solution Explorer provides a hierarchical tree view of the projects and files that compose a BI Development Studio solution. The top item in the Solution Explorer hierarchy is the solution name. The solution can have one or more project items under it. The BI Development Studio Solution Explorer provides project templates, including: Analysis Services Project, Integration Services Project,
Chapter 1: The Development Environment 17 Figure 1-10 Business Intelligence Development Studio—New Project Import Analysis Services 9.0 Database, Report Project, Report Project Wizard, and Report Model Project. As in the SQL Server Management Studio, BI Development Studio solutions are not restricted to one project. You can create solutions that are made up of any of the supported project types. You can see the Business Intelligence Development Studio’s New Project dialog in Figure 1-10. Analysis Services Project Analysis Services projects contain the definitions for the objects in an Analysis Services database. These include designing and creating Analysis Services databases, data source views, cubes, and dimensions, as well as working with the data mining features. Analysis Services database An Analysis Services database created using BI Development Studio includes the XML deﬁnitions for the database and its objects for later deployment to a speciﬁc instance of Analysis Services. To create an Analysis Services database, you select the File | New | Project option from the main BI Development Studio menu. Then from the dialog displayed, select the Analysis Services Project template from the Business Intelligence project type.
18 M i c r o s o f t S Q L S e r v e r 2 0 0 5 D e v e l o p e r ’s G u i d e Data source views A data source view is a document that describes the schema of an underlying data source. Such a view contains names and descriptions of selected database objects, such as tables, views, and relationships, that online analytical processing (OLAP) and data mining objects in Analysis Services reference. These objects can be organized and conﬁgured to provide a complete schema. You can develop an Analysis Services project without having to have an active connection to the data source, because the data source view caches the metadata from the data source it is built upon. Using a data source view, you can deﬁne a subset of data from a larger data warehouse. Cube Wizard A cube is a multidimensional structure that contains dimensions and measures; where dimensions deﬁne the structure of the cube, and measures provide the numerical values that the end user is interested in. The Cube Wizard is a visual tool that you can use to quickly create OLAP cubes. It is started by double-clicking the Cube node shown under an Analysis Services project or by right-clicking the Cube node and selecting View Designer. Dimension Wizard A dimension is a collection of objects that describe the data that is provided by the tables in a data source view. You can organize these dimensions into hierarchies that allow you to navigate paths to the data in a cube. Typically, users will base their analyses on the description attributes contained in the dimensions, such as time, customers, or products. A Dimension Wizard is provided in the BI Development Studio to guide you through the steps for specifying the structure of a dimension. Data Mining Designer A Data Mining Designer is provided as a primary environment, which allows you to work with mining models in Analysis Services. You can access the Data Mining Designer by selecting an existing item in a mining structure project, or you can use the Data Mining Wizard to create a new item. Using the Data Mining Designer, you can modify a mining structure, create new mining models, compare models, or create prediction queries. Integration Services Project Integration Services projects contain folders and files that allow you to manage the object definitions of data sources, data source views, and packages for SSIS solutions. Data sources are defined as project-level, which means you can have multiple projects in your solution that reference a single data source object. Data source views can be referenced by sources, transformations, and destinations in your project, and packages contain a collection of connections, control flow elements, data flow elements, event handlers, variables, and configurations. SSIS Designer The BI Development Studio contains an SSIS Designer, which is a graphical tool for creating packages. It has four tabs, one each for building the four elements of the SSIS project, including: the package control flow, the data flows, the