SpadabLY
How CASE-tools and methods relate to each other.
Experiences
GOfiln Lustig, Sven Ersson
Spadab
( ,
Stockholm
Sweden
(
A bstl'lIct
Spadab describes some or their business requirements and why
application de\'elopmcll! methods must change in order to meet
the actual and ruture demands on high quality sortw"re,
The need ror and importance or all architecture that supports
thc dinerent aspcet or systems de\'c1opment is stressed, Spadab
will also discuss how the architecture and strategy rorms the
basis ror succesrul inrormation systems and rOI'--USe or case
tools,
•
Spada" also describes their view on how case tools fits in into
( I thc systcms devclopment environment, what lasks can be
supported by the tools and giYCs a short oven'iew or IEFs ca-
pability and how it supports Spadabs de\'c1opment process,
Some or the reasons behind Spadabs I[F-decision arc also di-
scussed and how the case tool impacts the systems de\'elopment
proression_
Finallv Spadab lists some or their critical Sllccess ractors ror
s\'stems deYclopment that arc important regarding the imple-
mcntation or case tools,
© Spadab
CASES9
1.1
~adabl
Spadab g'yCS EDD-support to 92
banks,
+Computing center for • 4.5 million customcrs
92 Swedish Savings banks. • 13 million accounts
• 12no branchcs
• Development of banking • 7000 bank tcrminals
functions • 850 AT:Yls
- Basic functions
- Business support (
_ Informe tlon management
functions
<0 ..,. ..
1.2
Thc oycrall priority IS quality
!p RIO R I TIE 51 bccausc thc banks arc highly
automatcd and fully dcpcndcnt on
thc [Dr-systcms.
( ,
.vQualily rJcxibilit\' has bccomc morc
importan't during thc last years - the
banks are beginning to compcte \\'ith
.vFlexibility products,
.vProductivity l'roductiyity the profitability
margins are tighter.
0-
·1
~~ Sp:.llbh CISES'!
CASE89
2.1
A"LICATIOIl DIVILOPrllNT •
r 'Il0DUCTIOll I The status of direction of application
deyelopment. Go from anform to
engineering!
'HANDICRAFT""""""" INDUSTRY
ENTERPRISE FOUNDATION _
INFORMATION SYSTEMS
DfiliAND8
V lu.ln... In toou.
v Flulbl.
#I" Short dlv.lopm,nt tim.
( "'A.II.blllty .-' hour./day
" Int.grlty
0_
JOINT VENTURE PROJECT 2.2
USINCl IEF
Spadab is engaged in deYelopment
of new basic systems for nordic
........
.. ..,... .....
1000lAT
.,
uoo_
saYingsbanks. 'Characteristic for
'.NLIID these systems is modularization at a
~ . . .Mt high level (building blocks).· These
principles gi\'es the dirrerent banks
possibilities to create their own
unique products from the new basic
I . systems and own-developed systems.
..........
DIIIIIRK
...........
, IIIDEI
".....
--
CASE
2.3
Looking at sortware production as
an engineering process. That is the
reason why we must usc methods
and powerfull tools.
•
Make the
"right" choice!
CASES9
-Spadabs "iew on application development
3.1
An architecture that supports
different aspects of application
del-clopment is crucial.
O~
,,' 0
c? .., l-
v' ..,
~~ ARCHITECTURE
'1'
TECHNOLOGY
+Appllcatlon structure
+Olstributlon of data and function
+Enterprise "mod"ol
+Hardwaro
I +Baslc software
+Standards
II
I!Cl!.r~ ~__.J
3_2
000 IMPORTANT TO HAVE A
COMPREHENSIVE VIEW ON It is extremely important to haye a
APPLICA TION DEVELOPMENT comprehensive view on application
AND CASE 000
development and understand the
t,,£ business as such_
8 V /31
"£/3/3
'lTep BY ITIP •
TH~OUIIH UHOe~aTANOINII Of THE aUIINE88
. Aotlvltl ... n•• d. and DOli.
OUIIIN ANO IMPLeMENT effeCTIVE
IUfPO~T IN fORM Of eOp·IYlTeMa'
0_
1-- .'.-- -- --------.
II :.;:; Sp:ll.laiJ C.ISES'J
CASES9
Spadabs "iew .......
FUNCTION & PROCESSEB-
INFORMATION
BUSINESB ACTIVITIES
INTERACTIONI
COMMUNICA TION
0-0
DATA-
1I0DElD
-r
DATABAOE-
DeOIOfl
•
t
PROCESS lOOIC
(
I:
POl.l-OESION
(
UUR: HAN0600K8
I:
POM-COOE
0...,.,
4
We have divided our development
process in these main areas:
• From business information to
databases
• From business logic to program
code
• From
interaction,'conunmunication to
end-user instructions
•
r
v
C.\S£S')
CASE89
Spadabs Yiew .
INFORMA.. INTERA C T.I FUNC nON &
nON COMMUNICA T. PROCESS
Require- Informa -
ments tion
Security &
Organiza-
Integri"ty,---, tion
'-----"
Data- Handbooks/ Program
bases User instruct.
Goals &
QA problem
Feasibility
study
Economy
Education
.,
5
Added to these three main areas, (
there are number of other important
tasks to be performed in order to
build a "complete information sy-
stem" .
.,
~ Spauah C.ISE89
CASES9
IEF - An oyeniew .,
6.1
",
INTELLIOEIlT IBU UAIIlFRAUE I ,
WORKSTATIOtl
IEF
• Local and central encycJopedi
Centrel
Encyclopaedia
~ , • Tools used on local leycJ "
• ISP Information strategy
planning
COd8 8nd dst8-
b869 06nBfs tor
• B:\A Business area
analysis
/~
• BSO Business systems
design
• TO - Technical design
082 COBOL II MFS
• Tools used on ceniralleye!
( • Construction
6.2
The deliYerablcs from B:\:\ arc;
PROCESS HIERRRCHY [Ill I TY-R(!.l" i Il)tlSH I p-
DIAGRAM (PHD) DIRGRRM (ERO> • E R-diagram
-l- • business logic on elemcntary
leye! -
• process dependency diagram
rUtI( r IONRl
OECOMPOSITIOIl
• Bus Lillis,;
~
P~O(IUU on
.l ...!nt.vy
( I'WlI.
I
PROCESS RCTION DIRGRRM (PRO)
Proe t'55: CROUE -CUSTOrtER
ItlPORTS: ( .. It ly " '" ..... I ..... -I)~
I
("Illy .. , ". (uJlc.•• ~
(XPORTS: ("I,ly .. , ..... cut c""tOO"'II~'
r"l,ty .. ,N .... I (uJl