Very Computer

1. Lookup Tables to Lookup Tables

I am on a job converting an Oracle database to SQL Server.  We are making
some changes to the data model.  The database includes about 30 lookup
tables which supply necessary data choices to the main table.  In several
cases, there are lookup tables which, in turn, supply data to fields in the
lookup tables.  I haven't come across this before and wherever the
secondary lookup tables consist of only a few choices am recommending to
the client that they eliminate the secondary lookup table and use a
constraint instead on the field in the primary lookup table.  

Are lookup tables to lookup tables standard industry practice?  (My
instinct tells me no but I thought I'd check...)

Thanks.
--
Donna S.

(Remove no-spam from address before replying!)

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