I am studying the Clark-Wilson model, I can't exactly understand why the TPs must be executed in serial, is there a way to execute them in parallel? What would happen if I did execute them in parallel?

Thanks a lot

-- AscaL

  • Because executing things in parallel while keeping things transactionally consistent is ridiculously difficult to do? – Steve Apr 20 '13 at 17:25
  • Is it difficult or not possible? Does it violate any rule in the model? Thanks :) – AscaL Apr 20 '13 at 17:35
  • Well, its not impossible but really difficult outside the scope of security models (e.g. from the dev perspective), so I was simply thinking it might be a possible reason why within the scope of a security model. – Steve Apr 21 '13 at 2:12

There's no way to execute in parallel in Clark-Wilson because there is no standardized rule for how to handle concurrent access to the same data. This is a common problem with databases. For example, what do you do if thread A wants to read data thread B is changing? Reading over information on database isolation may clarify this for you. http://en.wikipedia.org/wiki/Isolation_(database_systems) is a pretty good resource.

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.