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— PC WEEKNAPPLICATION DEVELOPMENT
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Previewing the Applica lon, Development Revolution

erated for other environments, including  tral repository and CASE tools. 5 0... The CASE tool shields the

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This is the last. | the AS/400. Since the SAA Application, The design specifications of a CSP ap- | mer from having to know the detafls of

| article in a se- '"'— Development Environment will be the ::'- plication can now be stated in External «how to build CUA-compliant SCreens..
ries on IBM programmable workstation, CSP will ..:: Source Format (ESF), which is a tag ., The programmer only specifies logically |

Systems Appli- — have to be reimplemented to support. . language for defining the application. |, what is desired from the user—that is,

cation Architec- the development and generation of code: . The ESF maps directly onto the CSP. : :: field specification on a data-input form,

ture (SAA). The in the workstation environment, "" €" 7% source files, which are used to generate: '' or the selection of an item from a list.
introduction of . There are no plans to put the user in-: ' executable versions of CSP applications. | An interface that conforms with CUA
integrated com- tertace of the ADE on either the S/370." ;. Now that the ESF is formalized and 4" standards is automatically built from
puting envirom- or the AS/400. a IV, published, it's possible to build CASE !' . the logical definition by the Dialog Man-
ments such as An important component of the ADE'" tools that output ESF. At least two . jager, one of the tools in the ADE.

SAA will have a will be IBMs central repository. It will; CASE vendors, Index Technology Corp. |  Similarly, the complexities of database

major impact most likely be host-based and act ina'" and KnowledgeWare Inc., have already | | access can be hidden in the tools of the

on the software server mode for multiple development. ' taken steps in that direction. € [/ ADE. High-level specifications of data-

IH: MARTIN technologtes of  . workstations, each of which will have a The ESF, while currently in database | | base access can be made in a CASE tool.
ME, | the 19905. local repository of design information. files, can clearly be incorporated in the | These specifications are translated into
The focus of The central repository will hold all the repository when available, The ESF can ; the primitive forms in the repository. |

earlier articles in this series on SAA was y | " When the executable form of the appli-

the Common Programming Interface | ii salol is padnnv pisi RAME NU

VU ides programming PR - Pe ) m 4 | nguage needed to access the data-

a era ete IBM S Application Development Environment koše is autoriateatih built from the

ported SAA environments. These ser- MM A 5 SE Kepe oni biol id, | NNW  specifications in the repository.

vices include common programming lan-: Environment Ensutes Consisteney Among Project Members, |. The repository itself might not be con-

guages, common user interfaces, com- |: Boosts Produetivity of Design Team ge | fined to just a single host environment;

mon communication interfaces and nie ih dt might be stored in a distributed rela-
common database-access facilities. Posi- pu a o K RAVN ov sva rer gasa jr zkrilet | ; tional database. The developer can use
tioned on top of the CPI is the Applica- " Programmable KE si j ' the local repository on the programma-
tion Development Environment (ADE). '' | Workstations gi ; ; ' ble workstation to store those portions

As the name implies, it's the environ- i! of application definition that are being

ment in which developers will build € worked on. The distributed-database

SAA applications. ji , mechanisms of SAA will keep the
IBM hasnt announced the details of | databases synchronized.

the ADE yet, but there have been fairl EVA EVRE A a NA | £ Hi | ži
strong indications of what it will look 4 h VENAO s aa a € mr. AR NE, h Better Productivity |
tive application, with the programmable k! |; ment that is repeatable can be abstract-
workstation providing the user interface. | ed to higher levels and built into CASE
and much of the power. As shown in. ; tools. These higher levels of abstraction
the graph, the workstation will workin . | then generate the specifics for a particu-
a client-server mode with the host-based | lar application from relatively few pa-
repository, which will contain all of the - rameters. The result is higher productiv-
Su reguired to build an appli- ify'for the deraoneh m
cation. '] ". Once design specifications for an ap-
A Consistent Environment. :. š Mi 'plication have been stored in the reposi- MR
The workstation user interface will — | š H 'tory, they zz be used to generate exe:
use the most advanced Comm on User Local Repo Sitory: Ni oMcM | U | SEU a beee of the applications. Us-
vil th 'CUA) specifications. Developers Contains design Central Repositotyi šk OEM ole DB Godec
us have a consistent environment |

| specifications tor HU poe TRIJE any of the SAA lan:
in which to work. | one programmer's balhers desiaiti skocitiealin; ČI [ 'guages, such as C or COBOL.
. čili L A? ..) e if 4 | | .
The ADE will make it possible to gen- bortion of the m ec MIcallOHs

| HE eni V — The application-development environ-
irom all prograimmers and auto- Z MP | p

matically checks their consistency. O a pi m ena
tion. For example, a programmer build- Keaici bena RA je pe ute kisi: Sd a A zi v | ;now. The Cooperative environment be-
ing a cooperative application with | ei ki le S AI US, | a A MA i don Avaken. ,tween a host-based repository and
portions on the workstation and por- . % il! 44u AP" IL! see vi ANEJ |

erate applications for all SAA environ-

project.
ments from the programmable worksta-

opiledin z nak
um! i

tions on an AS/400 would kse —O | | i bp! pica! user interface on a program-
pa page OU write and de- Fi, ZE IE ge 'mable workstation is a powerful combi-
velop all of the code on the workstation. The Ap; lication Cl ment Knmni

The workstation-based ADE ja teo. pp Development Environment will be

Ci; SAA ji ae The generation of conventional
mi | | - perative | li tion hird-generation languages f | ;
Pa ee rati K PRA po lov wing nev  appuoawon, with the programmable Wworkstation Plicatjoc deve oneČA vire jeni | |
components that can be sent to the nie, ta nopiding ihe user. inter fi ace and much oj the power. hek Bo oa inake sea A BEŽ
njiho ce si o ela OU RTETA zbfe I—ei— oli nEH , possible. The result will be a revolution
guages, such as C, the developer v, PRE pih sa KIM : oviro 4 dn application-development, technology.
ship the source code to the AS/400 for . data za pih application, such as ' I — then be used directly with the CSP de. ' la eXt week, TI begin a series of arti.
compilation, or the ADE might provide — somra ents, screen definitions and 4," velopment tools, CASE development | pica sal object-oriented programming,
cross-compilers that allow share the repository. ou pe VA, tools and the code-generation portions . , 19199 that is changing the way
on the programmable w a repoaltoey, "re et VRE AENA ce Cep In fact tre developer can move '  programmers and users interact with
li case, the programmer's ndow on . (CASE) ter 1, IBineering |; from one of these next. 4 / po mputeca U m
anage- | |. To learn more about the subject of
ga articles, please call The James
| Martin Report, an information service
- | For information on seminars, please
., Contact (in the United States and Can.
/ ada;/ Technology Transfer Insti
in | | 741 10th St, Santa Monica, Cali f.
| transactio: nst corporate ' |. 90402 (213) 394.8305. mm Europe, con- |
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