Download - UseCases Usability Discussion v2ab
-
7/24/2019 UseCases Usability Discussion v2ab
1/27
Net Objectives, 11/06/15 NetObjectivesNetObjectives1
Agile Use Cases
(Driving Development)
eB J E C T I V E S
-
7/24/2019 UseCases Usability Discussion v2ab
2/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 2
My Goals
Enlighten Teach
Inspire
-
7/24/2019 UseCases Usability Discussion v2ab
3/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 3
The Purpose of Software
Development is
To provide a suitable solution for users
That consists of ualit! code
"nd doesn#t cost too $uch
here Use Cases !ive
Suita"le # Useful $Usa"le
-
7/24/2019 UseCases Usability Discussion v2ab
4/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 %
hat is a Use Case%
&ro$ an "nal!tic 'erspective, a use case is (a!to discuss (ith users ho( the s!ste$ (ill enablea user to )et so$ethin) done
*o(ever, fro$ a +evelop$ent 'erspective, a
use case is a collection of scenarios that haveto be coded up
uccess scenarios
"lternative scenarios
&ailure scenarios -)raceful de)radation.
u)s -ne( failure scenarios.
e se cenarios as the asis for our or
-
7/24/2019 UseCases Usability Discussion v2ab
5/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 5
The Purpose of Use Case Analysis
To develop scenarios that drive develop$ente (ant a s!ste$ that (ors
hose scenarios )et the job done4
sable (ould be nice
This tal is about ")ile +evelop$ent, socenarios are developed as the! are produced andprioritied
+eveloped scenarios are validated as the! are
producedcenarios are developed as soon as possible, so that(e can have so$ethin) to sho( our custo$ers andusers
-
7/24/2019 UseCases Usability Discussion v2ab
6/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 6
e &ali'ate a Senario our ays
"efore we Atually *o'e it up+
s it useful7+id it satisf! its post8conditions7
s it usable7
9a! reuire stor!boards and (irefra$es to validates it buildable7
9ust verif! (ith developers that fits (ithin
architectural sche$e, etc
s it testable7:an (e envision the test scenarios (e need to test
it7
-
7/24/2019 UseCases Usability Discussion v2ab
7/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 ;
*goo'+ Team Philosophies, lea'ing to
Agility
-ne .ite at a Time< re$inds us to do thin)s a little at a ti$e,(ith plannin), validation, and $ana)e$ent of the pieces=
&ali'ation Centriity< re$inds us that the activities ofvalidation, verification and test are $ore i$portant4 thanthose of anal!sis, desi)n, and construction> and that (e $ust
activel! loo for thin)s that cause us to chan)e=Don/t Do hat you Don/t 0ee'< (or on those thin)s (iththe $ost value> avoid anal!sis paral!sis, and eep $ovin)
1uality Can/t "e the &aria"le< hen balancin) the three$ain variables -scope, ti$e, ualit!., ualit! can#t be the one
that slips!et the Pro'ut !ea'< decisions $ust be based on theproduct, not docu$ented plans, anal!ses, reuire$ents, ordesi)ns=
-
7/24/2019 UseCases Usability Discussion v2ab
8/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 ?
Managing the .uil'ing of Pro'ut
or2 .a2log< an evolvin), prioritied ueue ofbusiness and technical functionalit! that needs
to be developed into a s!ste$ -ource< cru$.
Story< +escribes so$e ite$ of value to a useror product o(ner -ource< @', :ohn.
Tas2< ell8defined unit of (or in the process
that provides $ana)e$ent (ith visible
checpoints into the status of the project= Tasshave readiness criteria and co$pletion criteria=
ABones 8 9C -ource< D
-
7/24/2019 UseCases Usability Discussion v2ab
9/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 E
34ample Stories
+escription< hop for Found Trip &li)htsie< i)
Galidation< &unctional test each cenario
+escription< Found Trip, sin)le passen)er, no lu))a)e,no seat selection, one le)
ie< Har)eGalidation< &unctional Testin)
+escription< "dd the :elloie< $all
Galidation< &unctional Testin)
+escription< *elp 9aretin) 'repare $aterials for thetrade sho(
ie< Har)e
Galidation< nspection b! 9aretin)
-
7/24/2019 UseCases Usability Discussion v2ab
10/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 10
34ample Tas2s
+escription< Ne( build scriptDsti$ate< 6 hr
O(ner< ue
DIit :riteria/Gerification< uild succeeds, Boe (ill inspect results
+escription< "dd the $ulti8passen)er4 chec8boI to the
Dntr!creenDsti$ate< % hr
O(ner< Boe
DIit :riteria/Gerification< nit tests (ritten and passed
+escription< JH Trainin)Dsti$ate< 2 da!s
O(ner< ue/Boe
DIit :riteria/Gerification< trainin) co$pleted
-
7/24/2019 UseCases Usability Discussion v2ab
11/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 11
The .asi Development !oop
&or Dach teration !ou
-
7/24/2019 UseCases Usability Discussion v2ab
12/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 12
0ee's, Use Cases, Stories, Tas2s 5
Creates or2 e 0ee' to Manage
*ere#s (hat reco$$end for the $ajor steps in$ovin) fro$ a ser#s need to a collection of
+eveloper Tass
Business Level
Product Level
Development LevelTaskTask
TaskTaskTaskTask
TaskTaskTaskTask
TaskTask
Need
User StoryUser StoryUser Story
Scenario/
Story6teration Planning Game
Use CaseDetail a Use Case
3ver7Unfol'ing Story
-
7/24/2019 UseCases Usability Discussion v2ab
13/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 13
Use Cases aren/t the *only+ thing going on
ATM Projec
Team BusinessProduc
!uncion SrucureManagemen
Team
Training
"e#$SCM$TesEn#ironmens
"e#Process
%
App!rame&or'
Tools
Mainenance"ocs
Sales Sp
Mar'eing
Suppor
serTraining
ser "ocs
%
Con#ersions
e&ries
e*acorings
%
+ogin
,i-dra&Cas-
"eposiC-ec'
%
Trans*er!unds
e*res- Cas-"ra&er
T-e seCasesPopulae -e.!uncion/+eg
Business!rame&or'
AdapProcesses
-
7/24/2019 UseCases Usability Discussion v2ab
14/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 1%
Generating Senarios for the System
hat 'ieces +o
e Need7
+esi)n and
+evelop$ent
hat :ould e
+ifferent7'arallel cenarios
hat Dlse 9i)ht t
+o7DIt cenario
hat :ould Mo
ron)7"lt cenario
*o( +o e 9ae
t +o That7asic cenario
hat hould This
se :ase +o7're/'ost8:onditions
hat hould The
!ste$ +o7se :ase Hist
hat s The
!ste$ &or7Gision
sa0ili1 Concerns
Cone2ualSudiesTas'Anal1sis
(sa0
ili1C
once
rns
I "esign3"e#elopmen3e*acoring
-
7/24/2019 UseCases Usability Discussion v2ab
15/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 15
A''ing .usiness &alue for a Use Case
Business Value
Time
$E4
or
.good enoug-/
anal1sis
design$de#elop$re*acor
de#eloped scenariosS
S
S
-
7/24/2019 UseCases Usability Discussion v2ab
16/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 16
My Assumptions A"out Usa"ility
That it can be done incre$entall!That $ini$al up8front anal!sis needs to be done
This doesn#t $ean none4, thou)h, 9*O
That interfaces can be refactored to)ether as(e )o
That $iddle tier4 can be separated fro$
la!er in order to separate lo)ic fro$ interface in
such a (a! that lo)ic persists even if chan)es
-
7/24/2019 UseCases Usability Discussion v2ab
17/27Net Objectives, 11/06/15 NetObjectivesNetObjectives1;
!et the Games .egin
-
7/24/2019 UseCases Usability Discussion v2ab
18/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 1?
-
7/24/2019 UseCases Usability Discussion v2ab
19/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 1E
-
7/24/2019 UseCases Usability Discussion v2ab
20/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 20
-
7/24/2019 UseCases Usability Discussion v2ab
21/27NetObjectivesNetObjectivesNet Objectives, 11/06/15 21
The importane of up front stu'ies an'
soping
ABonC These are of para$ount i$portance K the$ore ti$e !ou spend on these the better=
A+anC +o just enou)h to feel co$fortable, then
di) in= Fefine as !ou )o, no(in) that !ou
probabl! didn#t )et it ri)ht, but hopin) that !ou
)ot close enou)h
-
7/24/2019 UseCases Usability Discussion v2ab
22/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 22
Analysis paralysis 5 how muh is
enough
ABonC "nal!sis paral!sis is a boo)ie $an thatpro)ra$$ers constantl! raise because the!
don#t feel the project is started until !ou be)in
codin)=
A+anC "nal!sis 'aral!sis is a trap for ever!one=
Lou defeat b! constant validation and $ovin)
for(ard once !ou have enou)h4= Not (hat !ou
thin is enou)h, but (hat the tea$ thins isenou)h=
-
7/24/2019 UseCases Usability Discussion v2ab
23/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 23
User interfae integrity 8 onsisteny
ABonC These are critical factors that affectusabilit! K the! depend on adeuate scopin),
develop$ent of a conceptual $odel -the $odel
offered to the user to help the$ for$ their
$ental $odel., a that covers $ost of thescope, and a t!le Muide=
A+anC t (ould be nice, but it is $ore i$portant
that the s!ste$ acco$plishes its $ission,$ain) is usable is different than $ain) it
nice4 to use
-
7/24/2019 UseCases Usability Discussion v2ab
24/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 2%
Coneptual mo'el 'evelopment
ABonC &e( )ood s can depend on $etaphors K(hat !ou reall! need is a )ood understandin) of
the $ajor objects and processes that the user
interacts (ith and (hat the! $ean to the user=
A+anC ")reed= "nd this can be done best b!
eIplorin) the objects as the! co$e up in
anal!sis and develop$ent throu)hout the a)ile
process> doin) it up front leads to hast! -andprobabl! incorrect. conclusions=
-
7/24/2019 UseCases Usability Discussion v2ab
25/27
NetObjectivesNetObjectivesNet Objectives, 11/06/15 25
Style Gui'e 'evelopment
ABonC There are several levels of t!le Muidereuired< corporate brandin), product fa$il!,
and product specific=
A+anC No doubt= The uestions are ho( soon
do !ou need it74 and hen does it )et
developed74
-
7/24/2019 UseCases Usability Discussion v2ab
26/27
-
7/24/2019 UseCases Usability Discussion v2ab
27/27
N tObj tiN tObj ti
Usa"ility testing 'uring agile
inrements
ABonC Feal usabilit! testin) is reuired K de$osto users don#t (or=
A+anC +epends on the iteration= Felease
iterations reuire eItensive usabilit! testin), just
as the! reuire eItensive J"= +evelop$ent
iterations onl! reuire de$os and testin) to
$ae sure that riss are bein) properl!
$iti)ated=