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SQLite,Firefox,andoursmallIMDBmoviedatabase

CS3200 Databasedesign(sp18 s2)Version1/17/2018

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Overview

• Thisdocumentcovers2issues:• HowtoinstallSQLitemanagerinFirefoxbrowser:- SQLiteisthemostwidelyuseddatabase.Forexample,Firefoxusesittostoreyourbookmarks.YouaregoingtoinstallasmalltoolthatallowsyoutoexplicitlycreateandmanageadatabasewithFirefox.

• HowtoloadthesmallIMDBmoviedatabase:• IpostedasmallfilethatcontainssubsetofdatafromtheIMDBmoviewebsite("300– SmallIMDB- SQLite.sql").YouwilluploadthesedataintoyourlocalversionofSQLiteandthenissuesqueriesoverthedatabase.

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1. Installing SQLite Managerin Firefox

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SQLite&SQLiteManger

Background:http://www.sqlite.org/about.htmlhttp://en.wikipedia.org/wiki/SQLite

FirefoxPlug-in:https://addons.mozilla.org/en-us/firefox/addon/sqlite-manager/

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HowtoinstallSQLiteinFirefoxDownloadandinstallSQLiteManager forFirefox

▪ ClickonAdd-ons

DownloadandconnecttosmallIMDB withSQLiteManager

▪ Downloadthefollowingfilefromourclasswebsite:"300- Small_IMDB_for_SQLite.sql"

▪ StartSQLiteMangerandfollowtheinstructionsonthefollowingpages

DownloadandinstallFirefox

▪ DownloadFirefoxfromwww.mozilla.org/firefox

▪ InnewerversionsofFirefox,youhavetopress"ALT"toseethe"menubar".

▪ RestartFirefoxwhentheinstallationisdone

Menubar:pressALT

▪ Searchfor"SQLite"inthetoprightsearchbar

▪ FindandinstallSQLiteManager StartSQLiteManager

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InstallingolderversionofFirefox

• Firefoxversion57("Quantum")hasdisabledsomeexistingadd-ons.WethusneedtouseanolderversionofFirefox(youcanhavemultipleversionsinstalledinparallelonyourmachine;usetheolderversiononlyforclassnotforbrowsingtheweb;onlyoneversioncanbeopenatatime)

• Downloadversion"Firefox56.0.2“fromhttps://support.mozilla.org/en-US/kb/install-older-version-of-firefox

InstallolderversionaccordingtoyourOS

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DisableUpdates

OpenBrowserandClickonoptions

• Weneedtoprevent"auto-update"duringtheinstallation• TurnofftheWiFi/Internetconnection.• OpenoldversionofFirefoxandgotoOptions.

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• ScrolltoFirefoxUpdates

Select"Nevercheckforupdates(notrecommended)"

• CloseFirefoxandturnWifi backon.• Installtheplug-in

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2. Loading the small IMDB movie database

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DownloadthesmallIMDBmoviedatabase

• DownloadthesmallIMDBmoviedatabase"300– SmallIMDB- SQLite.sql"fromoursharedfolder(seeresources)toyourcomputer

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ImportingIMBDmoviedatabase(1/4)

2.Createanewdatabase.Youcancallit"Small_IMDB"

1.StartSQLitemanagerinFirefoxunderTools(press"ALT"toseethemenubar)

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ImportingIMBDmoviedatabase(2/4)1.StarttheImportWizard

3.SelectourSmallIMDBDB

2.ChooseSQLinsteadofCSV

4.OK

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ImportingIMBDmoviedatabase(3/4)

Bypressingok,youareexecuting4407SQLcommands.Howcome?

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ImportingIMBDmoviedatabase(4/4)1.TypeyourqueriesNowyoucanseethe7

newlycreatedtablesinthedatabase

2.ThenHit "Run SQL"or press "Ctrl + F12"(or "Ctrl + ;" on Win)

3.Yourqueryresultswill(hopefully)appear

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-- Findallfilmswhichhave"Bill"inthenameselect*frommoviewherenamelike'%Bill%';

MoreInterestingIMDBqueries

• Executethefollowingtwoqueriesbelow,justcopyandpastetoavoidsyntaxerrors("--"indicatesacomment).Canyoufindalternativeinterestingqueries?

-- Findallactorsandtheirroleswhoplayedinamovie-- with"Bill"inthenameselectfname,lname,role,namefrommovie,cast,actorwheremovie.id ="cast".midand"cast".aid =actor.idandmovie.name like'%Bill%';

Thetablename"cast"requiresquotationmarksasitisaprotectednameinSQLite(butnotinSQLserver)

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ReferentialIntegrity

PName Price Category Manufacturer

Gizmo $19.99 Gadgets GizmoWorks

Powergizmo $29.99 Gadgets GizmoWorks

SingleTouch $149.99 Photography Canon

MultiTouch $203.99 Household Hitachi

Product CompanyCName StockPrice Country

GizmoWorks 25 USA

Canon 65 Japan

Hitachi 15 Japan

Gizmo $14.99 Gadgets Hitachi

SuperTouch $249.99 Computer NewCom

...violatesKeyconstraint

...violatesForeignKeyconstraint

SimplifieddefinitionKeyconstraint:minimalsubsetofthefieldsofarelationisauniqueidentierforatuple.Foreignkey:mustmatchfieldinarelationaltablethatmatchesacandidatekeyofanothertable

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Databaseimport:withSQLstatements

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Databaseimport:withSQLstatements

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WhatistheschemaofthissimplifiedMovieDatabase?

Actoridfirst_namelast_namegender

Movieidnameyearrank

Castaidmidrole

Theschema describesthestructureofadatabase,i.e.tables,attributes,integrityconstraints

Actor(id,first_name,last_name,gender)Cast(aid,mid,role)Movie(id,name,year,rank)

Actor.id,Movie.id=primarykeysofthecorrespondingtablesCast.aid=foreignkeytoActor.idCast.mid=foreignkeystoMovie.id

Tables Attributes

IntegrityConstraints(primarykeyscanalsobeshownbyunderlining)

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MoredetailsonthesmallIMDBschema

ThedatainthisdatabaseisfromtheIMDBwebsite.OursmallIMDBmoviedatabaseconsistsof7tableswiththefollowingschema:

ACTOR(id,fname,lname,gender)MOVIE(id,name,year)DIRECTOR(id,fname,lname)CAST(aid,mid,role)MOVIE_DIRECTOR(did,mid)MOVIE_GENRE(mid,genre)DIRECTOR_GENRE(did,genre,prob)

ThedataweuseforthisclassisonlyasmallsubsetofthelargeIMDBmoviedatabase,thusyoumaynotbeabletofindallyourfavoritemovies.ButyouwillfindsomeQuentinTarantinomovies.Howmany?

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SmallIMDBMovieDatabase:Schema

Actoridfnamelnamegender

Movieidnameyearrank

Directoridfnamelname

Castaidmidrole

Movie_directordidmid

Movie_genremidgenre

Director_genredidgenreprob

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SmallIMDBMovieDatabase:ExampleTuples

id fname lname gender933 Lewis Abernathy M2547 Andrew Adamson M... ... ... ...

Actorid fname lname429 Andrew Adamson2931 Darren Aronofsky... ... ...

Director

did genre prob429 Adventure 0.75429 Music 0.25... ... ...

Director_genre

did mid11652 1092044291 17173... ...

Movie_director

id name year rank10920 Aliens 1986 8.217173 Animal House 1978 7.5... ... ... ...

Movie

aid mid role16844 10920 Lydecker36641 10920 Russ Jorden... ... ...

Castmid genre10920 Sci-Fi10920 Action... ...

Movie_genre