TAILIEUCHUNG - Microsoft SQL Server 2000 Data Transformation Services- P4

Microsoft SQL Server 2000 Data Transformation Services- P4: Data Transformation Services in Microsoft SQL Server 2000 is a powerful tool for moving data. It’s easy to use, especially when you’re creating transformation packages with the DTS Wizard. But it’s also a flexible tool that you can customize to gain a high degree of control over the transformation of your data. | DTS Connections and the Data Transformation Tasks 126 Part II As indicated by its name the Transform Data task is at the heart of Data Transformation Services. This task is a data pump that moves data from a data source to a data destination giving you the opportunity to modify each record as you move it. Three chapters of this book are devoted to the Transform Data task This chapter outlines the task s basic functionality and properties. Chapter 7 Writing ActiveX Scripts for a Transform Data Task describes the use of ActiveX scripts to programmatically control data transformations. This chapter also discusses creating and using lookups. Chapter 9 The Multiphase Data Pump shows how to use the new SQL Server 2000 capability to write code for eight different events in the operation of the Data Pump. There are also chapters devoted to the other two data transformation tasks Chapter 8 The Data Driven Query Task describes a task that can define several output queries in the process of data transformation. Chapter 10 The Parallel Data Pump Task describes a new task that lets the data pump use hierarchical recordsets. Additional key information relating to the Transform Data task can be found in these chapters Chapter 5 DTS Connections Chapter 27 Handling Errors in a Package and Its Transformations Chapter 28 High Performance DTS Packages Chapter 32 Creating a Custom Transformation with VC Note -------------------------------------------------------------------------------- It s possible to get confused about the naming of the Transform Data task. Some people refer to it as the Data Pump task reflecting the DataPumpTask and DataPumpTask2 objects that implement this task. It is also called the Data Transformation task. When to Use the Transform Data Task I have built DTS packages that don t have any Transform Data tasks and I have built other packages in which this task did all the movement and manipulation of the data. The Transform Data task is one of the most versatile

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