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You create an entity named Customer in a Business Connectivity Services (BCS) object model.
You need to ensure that Customer data can be displayed in a Business Data List Web Part.
Which method type should you use?
A. Finder
B. Genericlnvoker
C. IDEnumerator
D. SpecificFinder
Correct Answer: A
Explanation/Reference:
MNEMONIC RULE: "Finder for all Customer data"
The first method created is ReadItem, which allows you to retrieve a specific record from the external store based on an identifier. This is mapped to the XML metadata as a method instance of type "SpecificFinder."
The second method that is created is ReadList, which retrieves all records from the external store. This is mapped in the XML metadata as a "Finder" method instance.
These are the minimum two methods that your entity needs to implement in order to serve as a connector for BCS.
Using Business Connectivity Services in SharePoint 2010
http://msdn.microsoft.com/en-us/magazine/ee819133.aspx
