LINQ LazyLoading

LazyLoading means that the query depends on the entity relationship to pull its associated data.

So if the TPerson and TAddress has fields that are associated or have relationships, then just quering the TPerson would get the related TAddress data.

http://www.davidhayden.com/blog/dave/archive/2007/08/05/LINQToSQLLazyLoadingPropertiesSpecifyingPreFetchWhenNeededPerformance.aspx