Determine boolean conjunctive query are cyclic or acyclic, Mathematics

Assignment Help:

Are the following Boolean conjunctive queries cyclic or acyclic?

(a) a(A,B) Λ b(C,B) Λ c(D,B) Λ d(B,E) Λ e(E,F) Λ f(E,G) Λ g(E,H).

(b) a(A,B,C) Λ b(A,B,D) Λ c(C,D) Λ d(A,B,C,D).

(c) a(A,B,C) Λ  b(A,B,D) Λ c(C,D) Λ d(C,E,F) Λ e(D,E,F).

If they are acyclic, give a join tree, if they are cyclic; give a hypertree decomposition of minimal width of the query.

 


Related Discussions:- Determine boolean conjunctive query are cyclic or acyclic

How many baseball cards does peter now have, Peter purchased 14 latest base...

Peter purchased 14 latest baseball cards for his collection. This increased the size of his collection through 35%. How many baseball cards does Peter now have? First, you must

Invariant lines, What lines are invariant under the transformation [(103)(0...

What lines are invariant under the transformation [(103)(01-4)(001)]? I do not know where to even begin to solve this. Please help!!

Lcm, what is the LCM of 4, 6, 18

what is the LCM of 4, 6, 18

How many cubic yards of concrete are required, A concrete retaining wall is...

A concrete retaining wall is 120 feet long with ends shaped as given. How many cubic yards of concrete are required to construct the wall? a. 217.8 yd 3 b. 5,880 yd 3

Operations research, Explain Analytical Models in Operations Research with ...

Explain Analytical Models in Operations Research with Application

Calculus, find or evaluate the integral integrate((e^2x + e^x + 1)/(e^x))dx...

find or evaluate the integral integrate((e^2x + e^x + 1)/(e^x))dx

Measures of skewness-measure of central tendency, Measures Of Skewness ...

Measures Of Skewness - These are numerical values such assist in evaluating the degree of deviation of a frequency distribution from the general distribution. - Given are t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd