Is Null is acceptable for the Number Column having Default Value '0'?

But Here I am not inserting the record with direct insert query as "insert into table values(@c1,@c2)".I am inserting record using DataSet as like this SqlConnection con = new SqlConnection(connStr); DataSet ds = new DataSet(); DataRow dr; SqlCommand cmd = new SqlCommand("select * from address",con); SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cmdBuilder; da.FillSchema (ds,SchemaType.Source ); da.Fill(ds, "address"); dr = ds.Tables["address"].NewRow(); dr["sname"] = "tomy"; dr["fname"] = "peter"; ds.Tables["address"].Rows.Add(dr); cmdBuilder = new SqlCommandBuilder(da); da.Update(ds, "address");