The Atom Data Feed Provider Last, the add-in installs an atom data feed provider to allow you to import data from atom data feeds into a PowerPivot workbook. a data feed provides data to a client application on request. the structure remains the same each time you request data, but the data can change between requests. Usually, you identify the online data source as a URL-addressable HttP endpoint. the online data source, or data service, responds to requests at this endpoint by returning an atomsvs document that describes how to retrieve the data feed. When you open an atomsvc document, the PowerPivot Atom data feed provider detects the ile type and prompts you to load data into PowerPivot. When you conirm the load operation, the provider connects to the data service, which in turn encapsulates the data in XML by using the atom 1.0 format and sends the data to the provider.
Data Sources Your irst step in the process of developing a PowerPivot workbook is to create data sources and import data into the workbook. you can import data from a variety of external data sources, including relational or multidimensional databases, text iles, and Web services. You can also import data by linking to tables in excel, or simply by copying and pasting data. each data source that you add to the workbook becomes a separate table.
External Data When your data comes from an external data source, you use the applicable button in the Get external Data group of the ribbon in the PowerPivot window, as shown in Figure 10-2. the button you choose launches the table import Wizard for the type of data that you are importing.
FIGURE 10-2 the Get external Data group in the PowerPivot window
you can choose from a wide variety of data sources: ■
Databases
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sQL server 2005, sQL server 2008, sQL server 2008 R2, and Windows azure Microsoft Ofice Access 2003, Access 2007, and Access 2010 sQL server 2005 analysis services, sQL server 2008 analysis services, and sQL server 2008 R2 analysis services oracle 9i, oracle 10g, and oracle 11g teradata V2R6 and teradata V12 informix
PowerPivot for Excel
CHAPTER 10
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