Alpha Geek

(8)

$10/per page/Negotiable

About Alpha Geek

Levels Tought:
University

Expertise:
Accounting,Algebra See all
Accounting,Algebra,Architecture and Design,Art & Design,Biology,Business & Finance,Calculus,Chemistry,Communications,Computer Science,Environmental science,Essay writing,Programming,Social Science,Statistics Hide all
Teaching Since: Apr 2017
Last Sign in: 438 Weeks Ago, 1 Day Ago
Questions Answered: 9562
Tutorials Posted: 9559

Education

  • bachelor in business administration
    Polytechnic State University Sanluis
    Jan-2006 - Nov-2010

  • CPA
    Polytechnic State University
    Jan-2012 - Nov-2016

Experience

  • Professor
    Harvard Square Academy (HS2)
    Mar-2012 - Present

Category > Computer Science Posted 23 Apr 2017 My Price 5.00

When should you use a surrogate key?

a. When should you use a surrogate key?

b. Describe two disadvantages of surrogate keys.

c. What is the difference between an alternate key and a candidate key?

d. What does the notation Last Name (AK2.2) mean?

e. Name four column properties.

 

Answers

(8)
Status NEW Posted 23 Apr 2017 11:04 AM My Price 5.00

-----------

Attachments

file 1492946162-Answer.docx preview (135 words )
a-----------. W-----------hen----------- sh-----------oul-----------d y-----------ou -----------use----------- a -----------sur-----------rog-----------ate----------- ke-----------y? ----------- b.----------- De-----------scr-----------ibe----------- tw-----------o d-----------isa-----------dva-----------nta-----------ges----------- of----------- su-----------rro-----------gat-----------e k-----------eys-----------. -----------c. -----------Wha-----------t i-----------s t-----------he -----------dif-----------fer-----------enc-----------e b-----------etw-----------een----------- an----------- al-----------ter-----------nat-----------e k-----------ey -----------and----------- a -----------can-----------did-----------ate----------- ke-----------y? ----------- d.----------- Wh-----------at -----------doe-----------s t-----------he -----------not-----------ati-----------on -----------Las-----------t N-----------ame----------- (A-----------K2.-----------2) -----------mea-----------n? ----------- e.----------- Na-----------me -----------fou-----------r c-----------olu-----------mn -----------pro-----------per-----------tie-----------s. ----------- An-----------swe-----------r: ----------- aW-----------hen----------- th-----------e t-----------abl-----------e i-----------s n-----------ot -----------hav-----------ing----------- an-----------y s-----------uit-----------abl-----------e c-----------olu-----------mn -----------whi-----------ch -----------can----------- be----------- co-----------nsi-----------der-----------ed -----------as -----------pri-----------mar-----------y k-----------ey,----------- th-----------en,----------- us-----------er -----------can----------- us-----------e -----------sur-----------rog-----------ate----------- ke-----------y. ----------- bT-----------he -----------poi-----------nts----------- to----------- sh-----------ow -----------the----------- di-----------sad-----------van-----------tag-----------es -----------of -----------sur-----------rog-----------ate-----------
Not Rated(0)