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PG WEEKNAPPLICATION DEVELOPMENT. |
PmE70
ii APPLIED INTELLIGENCE

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Previewing the Application, Deyelopment Revolution

"AVGUST 28, 1989

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paitory andi6 HUJE. me CASE tool shields the program-
erated for other environments, including  tral repository and CASE tools. j
| This is the last the AS/400. Since the SAA Application, The design specifications of a CSP ap- | mer from paje ie Ge of
article in a se- ' ' Development Environment will be the /5'" plication can now be stated in External, (// how to buil omo pone,
ries on IBM's programmable workstation, CSP will '':'' Source Format (ESF), which is a tag ''/ ., The programmer only ie He zv
Systems Appli- — have to be reimplemented to support: language for defining the application. , j what is desired from the eo be
cation Architec- — the development and generation o; ; The ESF maps directly onto the CSP. | field specification on a dai si ipu bem
ture (SAA). The | in the workstation environment, '""' %i""%',. source files, which are used to generate' |. or the selection of Gioso smi SE ži
introduction of There are no plans to put the user in ' executable versioris of CSP applications. An interface that co: u pa AEE ki
integrated com-  terface of the ADE on either the S/370." ;. Now that the ESF is formalized and hi standards is ik s. ee
puting environ- — or the AS/400. stih 4. published, it's possible to build CASE. !! | the logical defini si by Ha De log
s ments such as An important component of the ADE;' tools that output ESF. At least two || ager, one of the too! GV le me re
SAA will have a will be IBM's central repository. It will |. CASE vendors, Index Technology Corp. iii Similarly, the SD ke ne set a
N major impact most likely be host-based and act in a and KnowledgeWare lnc,, have already access can be hidden in the a
J MES on the software server mode for multiple development. ; taken steps in that directlon. /' ( ADE. High-level a KE m
MARTIN technologies of workstations, each of which will have a The ESF, while currently in database | ! base access can be made jna A bei
the 1990s. local repository of design information. files, can clearly be incorporated in the | These specifications si 5
The focus of 'The central repository will hold all the repository when available, The ESF can | the primitive forms in the repository.

i i i i ! When the executable form of the appli-
Nea Pra ae ona Ne cation is generated, the Structured Gue-

i i H H ' ry Language needed to access the data-
Para eu av ei IBM's Application Development Environntent PRE rnmae
ported SAA environments. These ser-

H ; 4 ; specifications in the repository.
vices include common programming lan-. Environment Ensures Consistetiey Among Projeet Metubers,

The repository itself might not be con-
Buages, common user interfaces, com- | | Boosts Productivity o£ Design Team | fined to just a single host eh
mon coramunication interfaces and : | it might be stored in a distributed rela-
common database-access facilities. Posi- | pvmzmii poma j ; tional database. The developer can use
tioned on top of the CPI is the Applica- ' Programmable i | | the local repository on the programma-
tion Development Environment (ADE). Workstations Č GE ši

As the name implies, it's the environ:

ment in which developers will build...

SAA applications. :
IBM hasn't announced the details of

" ble workstation to store those portions
! of application definition that are being
V worked on. The distributed'database
mechanisms of SAA will keep the

databases synchronized.
the ADE yet, but there have been fairly k J
strong indications of what it will look. | Better Productivity
like. The ADE will be an SAA coopera-

tive application, with the programmable '
workstation providing the user interface
and much of the power. As shown in -
the graph, the workstation will work in '.
a client-server mode with the host-based
repository, which will contain all of the
definitions reguired to build an appli-
cation. gle
A Consistent Environment.
The workstation user interface will
use the most advanced Common User
Access (CUA) specifications. Developers

Any portion of application develop-
ment that is repeatable can be abstract-
(ed to higher levels and built into CASE

tools. These higher levels of abstraction
| then generate the specifics for a particu-
lar application from relatively few pa-
rameters. The result is higher productiv-
ity for the developer. s
". Once design specifications for an ap-
»plication have been stored in the reposi-
'tory, they can be used to generate exe-

Local Repository: | £utable versions of the applications. Us-

taliltaj se |ing the facilities of the ADE, code can
Contains design entral Repositotyi be generated in of the SAA lan-
selen neje ei environment, specitications for Č PRE such as Ge COBOL.
worl one programmer's Gathers design specificalions a. i iron-
The ADE will make it possible to gen- bortion of the from all programmers and auto- SA! RE eni ime
erate applications for all SAA environ- project. tnatically cheeks their consistericy. | i a
ments from the programmable worksta-

tion. For example, a programmer build-
ing a cooperative application with
portions on the workstation and por-
tions on an AS/400 would write and de-
velop all of the code on the workstation,

vent from the one developers are used to
now. The cooperative environment be-

itween a host-based repository and

, | graphical user interface on a program-

z sove —., imable workstation is a powerful combi-
se B uill be an S. 4A ] "nation. The generation of conventional
workstation-based ADE is connect: , third-generation languages from the ap-
d. Cooperatively to the AS/400, allowing  SOODErALvEe application, with the programmable Workstation : plication development environment will
Programmer to develop application providing USET' a sa low existing optimizing compilers to
£omponents that can be sent to the ; the xim interf' ace and much of. the |." , make the applications as efficient as
A8/400 for execution. | - Reki tel š i ni | ,, , Possible. The result will be a revolution
In the case of third-generation lan: ' H j h
Buages, such as C, the U

jin application-development technology.
EN begin a series 4
ship the source code to the AS/400 for : om object oi J mine

Cles on object-oriented programming, a

i technology that is changing the way
,, Programmers and users interact with
on the programmable workstation. In ei ). ,jcomputers. 8 sali!
ther case, the programmer's window on i
he development process will be the To learn more about the subject of
a 4 | these articles, please call The James
in the ADE will parallel that of the cur- kda o o ormatlom service
t | J lada
TEM ori rm rode (C5P), sn For information on seminars, please
eh the application generator l ada) aaa preme
ere sk a a ; ZAL ZO, Sk, Samta Monica, Cal
o a ST || 90402 (213) 394-8305. In Europe, con-
there, an executable version can be gen- ze 5 OBX Uni m
nes.
(0524) 734505, ed