Batch insert/update with entity framework

Question

1. I have a Tags table whose schema consists of only ID and Name (unique). Now, from the GUI user can enter tags for a BlogPost. When the data is saved, with tags st

Answer 1

I don't believe the Entity Framework does batch inserts at all (at present). So if you must keep the number of DB roundtrips so low, you're probably going to have to use a stored procedure or a database trigger. Fortunately, the Entity Framework supports stored procedures which return entity types. There is documentation on MSDN about this. You could create a proc which accepts a string list of tags and returns tag entity instances. Alternately, you could add a VARCHAR column to your post table for a delimited list of tags, and parse it in the trigger.