You use DataContext to execute a LINQ query to return a database table. This table includes a column named LastProcessed. You must modify the column mapping to ensure that this column is not compared in conflict checking.

What should you do?

Apply one of three enums to the LINQ to SQL UpdateCheck property on a ColumnAttribute attribute to specify which members are to be included in update checks for the detection of optimistic concurrency conflicts. Setting the UpdateCheck property value to Never ensures that it is never used.

Setting the UpdateCheck property value to Always ensures that it is always used in conflict checking.

The UpdateCheck property (mapped at design time) is used with run-time concurrency features in LINQ to SQL.