But, isn’t there a way to create a dropdown list within one Table data field?
Yes, but you should avoid it. It's called a lookup field. Links on the subject below.
I could create another Table and link it to the Worker Table, but that seems not to be appropriate to me
Absolutely appropriate. It's called Normalization. More links.
Actually, easier if I cut and paste my whole standard list
Normalization Parts I, II, III, IV, and V
http://rogersaccessblog.blogspot.com...on-part-i.html
and/or
http://holowczak.com/database-normalization/
Entity-Relationship Diagramming: Part I, II, III and IV
http://rogersaccessblog.blogspot.ca/...ng-part-i.html
How do I Create an Application in Microsoft Access?
http://rogersaccessblog.blogspot.ca/...cation-in.html
Important for success:
One source about how to name things - http://access.mvps.org/access/general/gen0012.htm
What not to use in names - http://allenbrowne.com/AppIssueBadWord.html
About Auto Numbers
- http://www.utteraccess.com/wiki/Autonumbers
- http://access.mvps.org/access/general/gen0025.htm
The evils of lookup fields - http://access.mvps.org/access/lookupfields.htm
Table and PK design tips - http://www.fmsinc.com/free/newtips/primarykey.asp
About calculated table fields - http://allenbrowne.com/casu-14.html
About Multi Value Fields -http://www.mendipdatasystems.co.uk/multivalued-fields/4594468763
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.