Exam Ref 70-487: Developing Windows Azure and Web Services

Chapter summary

• You can use the EF or ADO.NET with LINQ to perform very complex and intricate data manipulation.

• Deferred execution is a critical behavior of LINQ queries. Remember that you get the data back only when you “demand” it either through an aggregate or through referencing a NavigationProperty.

• You can use lazy loading to minimize bringing back data that you don’t end up using, but it comes at the cost of more potential roundtrips.

• You can use eager loading to bring back all the data of related entities referenced in a LINQ query.

• There is substantial transaction support for each potential data access technology. Using the System.Transactions.TransactionScope is the most prominent and most flexible.

• The EF is the Microsoft ORM. The CSDL, ...