Auto Manual Online

Sponsored Links

 

 

 

Theory of Normalization contd. More Normalization Still More Problems

Source: www.cse.ohio-state.edu
Topic: Ford


Short Desciption:
Ford. car. Jones. Ford. truck. Brown Ford. car. Brown Ford. truck. Brown GM. car. Brown GM. truck. Brown Toyota. car. More Normalization ...

 

Content Inside:
Theory of Normalization contd. More Normalization Still More ProblemsPage 11More Normalization1Theory of Normalizationcontd.Part IMore Normalization2More Normalization MultiValued Dependencies(MVD) 4th Normal Form Join Dependencies (JD) 5th Normal Form Inclusion Dependencies Template Dependencies DomainKey Normal FormMore Normalization3Still More ProblemsPVL(Unnormalized)PRESIDENT VPLOSERClintonGoreBushPerotBushQuayleDukak isReaganBushCarterMondaleCarterMondaleFord FordRockefel erNixonAgnewFordHumphreyWalaceMcGovernPage 22More Normalization4PVL(Normalized)PRESIDENT VPLOSERClintonGoreBushClintonGorePerotBush QuayleDukakisReaganBushCarterReaganBushMon daleCarterMondaleFordFordRockefel erNixonAgnewHumphreyNixonAgnewWalaceNixonA gnewMcGovernNixonFordHumphreyNixonFordWala ceNixonFordMcGovernMore Normalization5PV PRESIDENT VPClintonGoreBushQuayleReaganBushCarterMon daleFordRockefel erNixonAgnewNixonFordPL PRESIDENT LOSERClintonBushClintonPerotBushDukakisRea ganCarterReaganMondaleCarterFordFordNixonH umphreyNixonWalaceNixonMcGovernBetterWhy?M ore Normalization6 If tuples <P V1 L1> and <P V2 L2> both appear then tuples <P V1 L2> and <P V2 L1> both appear.For example<Nixon Agnew Humphrey><Nixon FordWallace >Must Have<Nixon Agnew Wallace ><Nixon Ford Humphrey >Page 33More Normalization7MultivaluedDependency (MVD)PRESIDENT LOSERPRESIDENT VPGiven R(A B C)R.A R.Battribute R.B is multidependent onattribute R.AR.A multidetermines attribute R.Bif the set of Bvalues matching a given(Avalue Cvalue) pair in R dependsonly on the Avalue and is independentof the Cvalue.As usual A B and C may be composite.More Normalization8TheoremR.A R.Bif and only ifR.A R.CWe writeR.A R.B | R.CFor example:President VP | LoserNote that FD implies MVD.More Normalization9Theorem.The relation R(A B C) can be nonlossdecomposed into its two projectionsR1(AB) and R2(B C)iffthe multivalued dependencyA B|Cholds in R.Fourth Normal Form (4NF)For every nontrivial multiv ...

 

add to Google Reader add to Google Bookmark add to bloglines add to newsgator add to FURL add to digg add to webnews add to Netscape add to Yahoo MyWeb add to spurl.net add to diigo Bookmark newsvine Bookmark del.icio.us Bookmark @ SIMPIFY Bookmark MISTER WONG Bookmark Linkarena Bookmark icio.de Bookmark oneview Bookmark folkd.com Bookmark yigg.de Bookmark reddit Bookmark StumbleUpon Bookmark Slashdot Bookmark blinklist Bookmark technorati add to blogmarks add to blinkbits add to ma.gnolia add to smarking.com add to netvouz add to co.mments add to Connotea add to de.lirio.us

 

Related PDF Files

Ford Timing Set Installation Instructions


Topic: Ford

Ford has used two different styles of camshaft timing gear sprockets. The camshaft sprocket requires the use of a spacer. The camshaft sprocket does not require a spacer as it is integrated into the sprocket. Be sure to check your camshaft sprocket to see which unit you have before installing. ...

Theory of Normalization contd. More Normalization Still More Problems


Topic: Ford

Ford. car. Jones. Ford. truck. Brown Ford. car. Brown Ford. truck. Brown GM. car. Brown GM. truck. Brown Toyota. car. More Normalization ...

Safety Research Report Index Ford Sudden Acceleration


Topic: Ford

Ford Technical Service Bulletin 1993. j. Closing Report (with selected attachments) 8/31/94. 11. PE93011: 198688 Ford Mustang Cruise Control Malfunction ...

Saleen Ford Mustang a Prize in Great American Run


Topic: Ford

Some Ford Mustang fans are very familiar with crosscountry races such as the. Gumball and the Cannonball Rally and this time the Great American Run will ...

MOTOR VEHICLE EVENT DATA RECORDERS


Topic: Ford

Ford F450 Super Duty. Ford F550 Super Duty. Ford Mustang. Ford Ranger. Ford Taurus ... Ford Mustang. Ford Ranger. Ford Thunderbird. Lincoln Town Car ...

 

Sponsored Links