FEBRUARY 6, 1989

iš CASE Tools Stronely.. AE ect the Dev elopment Cycle

(it | e Enable the user to employ multiple
zA tegration; ela the CASE a V end "tina different
| Nj th 15, gi Mea MORI m ie Dani ie oc 'vz tools and the generator, so that code is types of diagrams representing
1 Nn i ksa 1 si

lysi design.
h in one phase being used in:the next  '.,  automati tr Dkjaeeet z the neti znak DAT draw program pro-
nanja LCASE.. phase. There also. should be h seamless : end tools cedures with diagrams, rak ES
[V technology, we"! interface between the phases. | integration Is Key | tions, loops, case structures ano o

look at the fune., <A wide varietj of Ude Te irbe tekm CASE šhould be used only | construcis of structured programira

min tured modeling and de-

tional character: | available. Keep ih d the following; be oducts that are fully inte- — 9 Enforce struc že

di ASE too po ly: to deseribe produc t enables accuracy and
lok ori uažes vč Mer z ie meti RS zob grated and that support all parts of the — sign of a type tha

: look for in these ign compo

as complete as
RES: ; business-planrting, ot strategic: —— pyramid!'This implies that the front-end o lotno checks to be p
tools. EU contain bus K es ljivih «4 tools and the back-end code generator It the information on multi:
Perhaps the ' planning sode kgtb iii, rš with sepa- use the same encyclopedia. A common |e diagrams, checking that they are
| sa the life ze Me planini aihlysiš or design tools. encyclopedia should be peči vd zadene PE AteKi have accuracy and integrity
| / de of an ECASE <. e Some analysis and design (00) Ne GE ješ zej management infor- and are complete.
| 'tool is to resort ''; have a process-oriented view of develop- " tation alu proj 4 e Store the information built up at
| MART 5 to an illustration. ,: ment with no data- modelinih nep mation. | i workstations in a central repository
" "] nj you see, | —m— shared by all analysts and Nea ei s
weve sobe a pyramid. " ki me nedrano the a resa kis ce
| e life-eycle process, as the pyramid | al spi; ma, delol-i-i— tral repository, €
o pe tes rate | Mili (ele N0 IA AA A none ine work o all analysts and de
| planning, analysis, design and construc: signers.
| tion. You'll notice that the figure depicts. | A či | da, GSH
| a fully integrated development method-: ) KA | Levels Of |. Characteristics of I-CASE Tools
| ology, supporting all phases of the lea gb | Peči h. JA cti vitie S CASE tools provide a much oe
yn. cycle process. iti Mizna SE ' level of component integration than a-
Ale op istra planine KEM ječo a le
| encompasses tne business Stra c-plan- DA Nea rate anning, an
| ning Var that are the foundation". go Sr aa ANN | tion are supported by separate and dis-
| — for subseguent, phases of the develop-'' fsN se ie nim ati | tinct workbench tools. These work:
| ment process. The next level is anale). K Koti benches are fully integrated so that one
| wherein a model is built of the funda-"' workbench directly employs the infor-
| mental data and the processes needed toj: 3 4 ie ae ul ii H  mation from another.
run the particular enterprise. From this PN A SE na za NM A code generator is fully integrated
analysis the systems need is deter- '. ii h peko UE ja RE A A DALI UDA with the design workbench (as opposed
mined. The third level is design with RRNA EO SE AA na diš oči to having a bridge to a separate code
CASE tools. Designs are expressed in ig, | ata inn ke nana ee US 3IJH, peaL with its own separate syn-
| : s constructjon, where systems reki se j V A a a ig o a A KU KSNIA mna encyclopedia as the front-end

ing, analysis and design com-
| - On the left side of tne ot IS lij planning, ys gn

ču ponents.
| seni an a A RJE pe HA The code generator employs the facili-
man o ENI else ph ii I: ties of reguisite operating systems and
ut orlenisd! View at the up ika tov database-management systems, including
| to implementation at the bottom. "''' 1. the data dictionary. It automatically
| At the strategic level on the data side," generates the reguired database state-

an overview of the information needed ''?.

to run the enterprise is created with an".
entity-relationship diagram. At the data-''
analysis level, this is extended into a'':'t:
normalized data model. At the strategic ' (se,
level on the right-hand (process) side, an '

ments and job-control language. The out:
put of the generator may be fed into an
optimizer, which adjusts the code and
database accesses to give optimal ma-
chine performance. Thorough documen-

| | tation is generated automatically.
overview model of the enterprise is crečii it "upi bi goni Ta ii di ii oja: si PEMEKCI GORO li David Hannum The components of an I-CASE tool
ated, and planning tools are used to re: "i: MNE 5 vije z Lee €: | support all phases of the project life cy-
late its goals, problems, critical success :::.. KA:

zežu k | cle in an integrated manner. In addition,
factors and so on to the functions in the an I-CASE tool kit provides
enterprise. At the analvala level; a model K | CAOE tools | are , used Jor the four stages of IS development.

data model. plicatio hould enterprisewide planning, data modeling
the di la model : olim ze ZE eti | : " sp peci ge 5 of ap NS S evolve with the and process modeling to create a frame-

- At the design level, specifications for '' sa Hi |, knowle ka
procedures are Created and fled out in ie ga Ca ili] SJE
Mili ve detail to drive a code gener- z m, Y mi Vega ca | ii ; kai a, | ee, ti

2.) izpe

work that fits many different types of
project life cycles. These powerful facili-
ties permit I-CASE tool kits to be uti-

ZAK, ij

| lized for corporatewide information-engi-

| 9 $- | STRE 1 EI iii a | ' nee applications, as opposed to

Tools SČA at this level include nili ie wi Some provide, data: leča modeli tools .,: Ane desirable characteristics of GASE EO RE ASIA JE appli-
screen painter, report generator, data-'//"':withou process analysis esign. : tools and -CASE tools are listed below. cations.

| structure diagrammer and tool for". ve Most CASE odi do edi incorporate : a n: ' Remember: A tool should not be re- Next week, well discuss the improve-
pome popa Pre uri tegratec Vol generator. c Sompe š - ferred | as CASE if it does not perform ment in productivity that can be real-
poš structiom level, el, program code, rs have spec [the following basic functions: ized with the use of CASE tools. 8

user to draw diagrams for
Manning, analysis or design phases on a The James Martin Productivity Series,
rorkstation an tnformation service updated guar-
olici information a about the terly, is available th h
| padon aba ohjecte v, rough High Pro-

| ps among  ductivity Software Inc., of Marble- —
pu a ha objet Ie that a complete set of in- a ba 1900 242-1240. For in-

tai pi PRA ii, posto hi, oa - Technology

-' Enable the

es best to zk CASE tool lo tore majo E

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