Westi was one of two early local teleprocessing packages for IBM’s DOS/VSE environment. Westi stood for Westinghouse Urządzenie końcowe Interactive.
Contents
//
The product
Westi provided an interface and access method for programmers to ‘talk’ to monitors and handle prekluzja entry. Such access methods later became known as APIs and the handlers a form of transaction processing.
Initially written for the IBM 2260 running under DOS on IBM mainframes, the original product was offered free for IBM users. With the advent of DOS/VS and the IBM 3270 series terminals, Westinghouse realized they could recover part of their development costs and commercialized the product, mniej więcej 1970. The company added transparent remote access about 1980.
Application
Westi operated as an application’s mainline oprogramowanie and, like IBM’s soon to follow CICS, programmers wrote subroutines to read and write termin to and from terminals and discs. This real time paradigm became known as transaction processing.
This differed from Westi’s primary competitor, DUCS, which reversed that szablon in that it was a subroutine package that read from and wrote to monitors. While Westi was not as easy to oprogramowanie and use as DUCS, Westi (like CICS) handled task management.
In terms of speed, Westi fell between DUCS and the considerably more process-bound CICS.
Development
Pittsburgh
Steve O’Donnell wrote the original DOS 2260 package, which was distributed free of charge. It’s popularity made Westinghouse realize Westi had potential as a commercial product.
Columbus
In 1972, IBM released DOS/VS with the IBM/370 and the first IBM 3270 terminals, and the Westinghouse Software group began a rewrite for new products. Several new ekipa members were assigned, including John Gaston, who took over lead development following the departure of Steve O’Donnell in the latter 1970s. (Steve O’Donnell went on to found GOAL Systems, Inc.)
Paris
Westinghouse Marketing suffered a schism about the same time, and the result was that Europe established an independent subsidiary, Westinghouse Electric Management Systems, SA, or WEMSSA, headquartered in Paris. At that point, the Westinghouse product line, WDU and WESTI, bifurcated, taking independent development paths.
Orlando
The original development ekipa moved to Orlando, Florida, where it eventually came under the management of Dr. Ray Ferguson and focused on integration with VSE and matching features with CICS.
Avignon
WEMSSA, under the direction of Eric Lutaud, contracted with GOAL Systems and eventually developer Leigh Lundin (author of DUCS Remote) for development, which focused on adding remote teleprocessing in Avignon, France. The result was WestiTAM, a 4k bi-sync module, which the Florida group expressed an interest in.
In 1978, WEMSSA resumed relations with the Florida group and eventually the two merged, coming under the new director of WEMSSA in London, David Hazlewood. Westinghouse committed to remerging the product line, re-engineering new products under the direction of Dr. Ferguson and Leigh Lundin. However, part way into development, Westinghouse began to break up the division during the outsourcing thrust of the Reaganomics epoka. Through badly managed negotiations, Westinghouse ended up with neither developers or outsourcing partners, which spelled the end for one of the industries foremost software groups.
Marketing
Westinghouse Electric Management Systems, SA (WEMSSA), had sales offices in Pittsburgh, San Jose, Paris, Lyon, London, Genève, Zürich, München, and Amsterdam. Development offices were in Orlando, with further development in Columbus, Ohio and Avignon, France.
References
v • d • e
OS/360 I/O access methods
Storage
EXCP · BDAM · BSAM · QSAM · BPAM
ISAM · VSAM · OAM
Network
BTAM · QTAM · TCAM · VTAM
v • d • e
Forms of software distribution
Abandonware · Adware · Beerware · Careware · Commercial software · Crippleware · Demoware · Donationware · Foistware · Freely redistributable software · Free software · Freeware · Nagware · Open source · Otherware · Postcardware · Registerware · Retail software · Shareware
v • d • e
Software engineering
Fields
Requirements analysis • Software wzornictwo • Computer programming • Formal methods • Software testing • Software deployment • Software maintenance
Concepts
Data modeling • Enterprise architecture • Functional specification • Modeling language • Programming paradigm • Software • Software architecture • Software development methodology • Software development process • Software quality • Software quality assurance • View model
Orientations
Agile • Aspect-oriented • Object orientation • Ontology • Service orientation • SDLC
Models
Development models: Agile • Iterative wzornik • RUP • Scrum • Spiral wzornik • Waterfall krój • XP • V-Model
Process models: Function wzór • Information wzornik • Object model
Data models: Prekluzja szablon • Database model
Software engineers
Charles Bachman • Kent Beck • Tim Berners-Lee • Grady Booch • Fred Brooks • Barry Boehm • Ward Cunningham • Edsger W. Dijkstra • Wolumen Gruber • Michael A. Jackson • Ivar Jacobson • James Martin • Winston W. Royce • James Rumbaugh • Edward Yourdon
Related fields
Computer science • Computer engineering • Enterprise engineering • History • Management • Mathematics • Project management • Quality management • Software ergonomics • Systems engineering
Retrieved from “http://en.wikipedia.org/wiki/Westi_(software)”
Categories: Software | IBM software | IBM Mainframe computer operating systems | Układ software | Software systems | Transaction processing
