There is no reason to isolate those few fields in a 1-1 relationship. From what I can see of the job details table, I don't see any repeating groups. Those would be off loaded to a many side table with one row for each repeating instance rather than one column. Some repeating groups are obvious such as Jan, Feb, Mar, etc. Others such as Heat, Electricity, Cable, etc. are less obvious. Also look for any group of fields with the same name + a numeric suffix such as Child1, Child2, etc.