does a circle between tables in oracle violate any normalization?

StackOverflow https://stackoverflow.com/questions/21427616

  •  04-10-2022
  •  | 
  •  

Question

i Want to Know if i Have a Circle Between my Tables in Oracle,Does it Violate any Normalization? if it Does,Which Kind of Normalization This Violate?
some thing like this imageenter image description here

Was it helpful?

Solution

Your diagram isn't actually cyclic. A references B and D, C references B and D. There's nothing wrong with that in any normalisation I'm aware of.

I'm not sure if cycles are specifically forbidden, but they're extremely difficult to deal with because once you've set up a cycle with referential integrity (assuming all references are non-optional) you can't actually delete any of it without disabling the constraints while you do it. So I'd try to avoid them if possible.

Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow
scroll top