'View'-performance

Hi all,

I am wondering about something: I have a table (let's call it "Table") which will contain a lot of records. Every record has a field named "deleted" which can be either NULL or a date value. When this field is NULL, the record in question may be used by a program. If the field contains a date, this field must be considered as "deleted" and cannot be used anymore.

The reason why I don't actually delete such records is that I want to be able to reference them from other locations (for history purposes).

What I am thinking about is creating two views for this table: Table_View and Table_History. Table_View would contain all records where "Deleted is null". Table_History would just contain all records (Select * From Table).

In my program most queries would need to view only the records where deleted is null.

Would " Select * from Table_View Where Name='xxx' " perform worse than " Select * from Table Where deleted is null and Name='xxx' " ?

I ask this because I would like it if I wouldn't have to type "where deleted is null" for about every query in my program. But I will not use this strategy if this would mean serious performance loss...

Thanks in Advance,
Alexander Priem.