You are implementing an N-tier application that will include WCF services. Services will transmit EF entities between tiers and the object context will not be available on the tier that modifies the entities. You need to ensure that service code can easily detect changes made to submitted entities when not attached to the object context.
What should you do?

 Posted by Rajkatie on 8/29/2012 | Category: ADO.NET Interview questions | Views: 1231 | Points: 40
Select from following answers:
  1. Use the ADO.NET EntityObject Generator Template to generate entity classes.
  2. Use the ADO.NET Self-Tracking Entity Generator Template to generate entity classes.
  3. Add client code to use the ObjectStateManager to detect entity changes.
  4. All Above

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Source: MeasureUp.Com | | Alert Moderator 

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