Hi,

I noted the following syntax generated by the database scripting thing which apparently tests for the existence of a table:

if exists (select * from sysobjects where id = object_id(N'[dbo].[billcode]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)

I understand it except for this question. What does the "N" that appears just before the [dbo].[billcode] and the "IsUserTable" do/mean?
I can't I find it anywhere in the help or Books On Line?

TIA
Ken