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PO WEEKNAPPLIGATION DEVELOPMENT |

SAA's Application Generator Will Boost Productivity

based on CSP. This approach will grow
to include other aspects of SAA.
Although IBM has a lot of work to do

"AWGUST 21, 1989

Pace 66

| cation, including screens, code and data

A a ene sevaloped [oe , definitions. Computer-aided software en-

is t 400. j ed sofi s k to
Ne ai s ME oh CSP is a good mainframe- . gineering (CASE. tools will RE IE ve ČSP NS RTA o ppličatkih
o ed application generator, it is not yet. ed with the repository, the SAA app a iker re mane oOR RAVNI
articles on AA ČU plant Applications can be tion generator and the facilities ol the pone ŠE gi ing CSP today.
IBM s dedni enerated and run on the AS/400 and Common A o Interface-Cora- ges a a ler Di ONA
EN Zb /2, but they must be maintained on munications (CPI-C), š i MO nat intra With (Ke Bee
(SAM) Ta i ii System/370 CSP's built-in screen Unfortunately, the nati m CSP to JE pove  oducavitj |
Si fi ' i high-level application-gen- is is 2 1 !
? i i 370-based, and is not support these higi k EP ODA OL
ka opal pa Pa ley Access (CUA) 3270 | | eration functions will keč aH toe ie m Spa, čbe 5 ee te a ROEVEH, |
ae : i i However, the productivity gains OUA s ay;
i i unications are year. s N ad
E Roke kun 05 kel O lca, by using awk- application generalors Je me to bo - nee lake 4h s TNE
h b ; i tion o! č and H
i d external products that some sem-:  nored; the integra!
JP iRLEH, s NEL connectivity can be simulated.  plication generators is a major trend of ej IT o kim
m no ne de JE a iRE ominable OBE Bode EH Sa balona that CUA interface is still just a direction for
logie: i able work- e dilemi one i J
tno 906 m siste He ara Will be able to want to use SAA today is that there are  CSP. The most reasonable CUA steps to

take with CSP are to follow CUA guide-
ni lines as closely as possible within the

Hi i C P sereen painter. i
SKA Application rja de Users tro | o a a ,

l closer to the SAA ideal than the capabil-
Progtariming Uekijše Ji ities of the user interface. CSP provides
excellent support. for both DB2 and
SAL/DS. It automatically generates
Structured Guery Language (SOL) from
high-level CSP statements. The program-
mer can either accept the generated SAL
or, if more sophisticated data access is |
reguired, modify it. Because DB2 and j
SOL/DS both now provide some degree
of homogeneous data distribution, CSP
also has access to distributed data.

CSP and the Data Manager

On the programmable workstation,
the relationship between CSP and the
| Data Manager is not as clean. It reguires
the user to access an external COBOL
module, which performs the database
access. This will probably not be ad-
dressed until the full CSP application-de-
velopment environment is ported to the
programmable workstation.

Finally, the tools for implementing co-
operative processing will not be avail-
able in the near future. It still is not
clear whether CSP will provide commu-
nications verbs, or if the subsystem run-
ning CSP on a given machine will be re-
sponsible for accessing different mod-
ules. CSP developers are hoping that the

An important trend in the 1990s will
be the rapid movement of application-
development functions from the main-
frame environment to POs. The low cost
of mips (million instructions per sec-
ond), faster response time, ease of use
and substantial processing power of the
programmable workstation makes it an
attractive environment for application
development.

Integrated computing environments
such as SAA will accelerate this trend
by allowing programmers to develop

enterprisewide applications on the PC

that run on any supported SAA plat:
form. Applications will incorporate
seamless interfaces that enable informa-
tion and processes to be distributed
among all machines on the network.

In the future, SAA-compliant. applica-
tions will be developed using a highly
integrated application-development envi-
ronment consisting of front-end CASE
tools, a common repository of design in-
formation and a back-end SAA applica-
tion generator. The integration of these
facilities into a common development

environment represents a major chal-
| lenge for IBM and other vendors.
| The industry's current application-de-
| velopment procedures are far from the
| ideal described above. Most applications

Higb-devel bingudge
iisets rapidly toristriiet
applications without a |
detdiled knowledge

ot SAA services.

Refiositoty
OI |

Desidni
| Specificatlohs

Presentatioti CortitntinicatloH

Intettace

can
Dialodue

eine
anduddes
l are still developed by hand, using con- s zneši ž ni iii

bdi

ventional third-generation languages.
| such as COBOL or FORTRAN. Hand-
cralted applications reguire a great deal

| Common Progtattitnlnig Intertace

of time and effort, are very expensive

and often don't meet users' needs. A ma-

jor objective of SAA is to improve pro-

latter proves to be the case,
It is possible to do some cooperative

| Processing today with CSP by using soft-

that i i
EM iva to do to develop Gross System (6se) ware that is available under both DOS

and OS/2. You must, however, leave CSP
into an application generator for its Systems Application
Architecture, but there are advantages to using CSP today.

to accomplish this. The tool to use is th
Enhanced Connectivity Facility (ECF). k

zao s RK dn
develop applications that run on any

provides the ability to build a shell
around an application that can then be
supported SAA environments. Applica-
tions developed with the application

made up of £omponents on different
generator will access relational data

grammer productivity through the pro-
vision of automated application-genera-
tion tools. The primary component of
SAA that will be used for the automatic
generation of applicatjons is the SAA
application generator. The function of
the application generator is to create
code that is compliant with the user,
programmer and communication inter-
faces defined by SAA,

Cross System Product (CSP), an IBM
fourth-generation language, has been

machines. ECF provides the communi
H ti ca-
|. two technology paths to Pursue. One is PRE NE o alley vil sootinie
| compliance with CUA and the develop-

ment of cooperative-processing applica-

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will describe the facilities in th SAA
te a oral dn to (O a di Dola Manager iger dle lo odpa, SVronnenia :
; , which pi t ac: | h
; allow for consistent applications across  cess to data anywhere in the pasli | Niso to kn projek STSAA, Itis To learn more about the subject of
Gitereni IBM plaforms. liti ofTerings | Modules of the application generator" Cooperative processing applications Pgd as Please call The James
legi lan a are mu pa ra er neme | nav te bullt today with SAA-compliant | updated auarteriy, odekn 2421240.
zne Kabine io a competitive appli- salo ki modules and automatically lo. . € such a or kmatjemia boae SEJI kore po seminars, please
ji In CSPs current form, applications oyr Ple apli poi ee ksa mlin Žvijemi lab tče o dajte odl Tranajer dt
i are developed on a System/370, but exe- Benerator applications will be built in a o, strt moi ne sd o 2d low ko: Santa Monica, Calif. Č
ne versions can be generated for sophisticated development environment, An alternative strategy more in lin 90402 (213) 30 . In Europe, con-
| MS, VI and DOB Jakne, a well as A malnframe.based reposltory wil store sa the future of SAA is to start now pono poe Zu ev St, Carnforth,
h An executable ver- | all the information related to an appl: — with application-generation technology (0524) gi aš United Kingdom

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