Re: final exam question

[Subbarao Kambhampati <rao@asu.edu>]

At 02:26 PM 5/9/2001 -0700, you wrote:
> Hi,
> I have a question about the dataintegration-1
> slides in regards to the exam. Slide 41 says that Sound implies that
> "the query should be contained in the plan", i.e., tuples
> satisfying the query are a subset of the tuples satisfying the plan,
> and slide 43 says that Q1 is a sound plan if
> the plan is contained in query Q... 
> Are these two the same thing... it seems that
> they are saying opposite. 


Sorry for the confusion.. clearly I screwed up in slide 41

Sound implies that the Plan is contained in the query

Complete implies the query is contained in the plan.

Rao