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ColumnAttribute Property

Meaning in Life

CanBeNull

This property indicates that the column can contain null values.

DbType

LINQ to SQL will automatically infer the data types to pass to the

database engine based on declaration of your field data. Given this, it

is typically only necessary to set DbType directly if you are dynamically

creating databases using the CreateDatabase() method of the

DataContext type.

IsDbGenerated

This property establishes that a field’s value is autogenerated by the

database.

IsVersion

This property identifies that the column type is a database timestamp

or a version number. Version numbers are incremented and timestamp

columns are updated every time the associated row is updated.

UpdateCheck

This property controls how LINQ to SQL should handle database

conflicts via optimistic concurrency.