Hi all 

What is recommended TermBase structure: 

1. in different domain-specific sdltb files

I this case I am getting lost among many files and loosing track whenever I need them connected to Trados

or

2. in the same single sdltb file 

in this case I feel the sdltb file gets oversized if I use fields to specify my language domain for each entry, plus it takes more time for manual manipulations in Excel column

Are there any recommendation on how to maintain/keep termbases more efficient in terms of minimum files size / faster search with better translator-friendly approach?

Please share, thank you