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> Relational Theory Relevar Kind Vs Relevar Type, Any Version    
 
   
hishamzero1
post Sep 1 2019, 12:36 AM
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Joined: 1-September 19



Dears,

after greeting,
a first i am new here and if any directions to me about how to post or where to post please let me know.
I have a little of know about CS and programming (but trying to read more as i can) and i hit something while i am reading a book by C. J. Date, called "Relational Theory for Computer professionals" when he talked about Relvar definition (i know this concept "Relvar" introduced by the write in 1995) he mentioned there is Relvar Kind and Relvar Type (data type or date structure), what the writer mean by Relvar kind because i searched for it with no luck.

Regards,

Hisham basmouk
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Doug Steele
post Sep 1 2019, 08:27 AM
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From: St. Catharines, ON (Canada)


Does this help? https://en.wikipedia.org/wiki/Relvar

--------------------
Doug Steele, Microsoft Access MVP (2000-2018)
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nvogel
post Sep 1 2019, 09:12 AM
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Joined: 26-January 14
From: London, UK


"Kind" just refers to whether a relvar is base (table), virtual (view) or a snapshot (materialized view).
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