Persistence Software
{{Infobox company
| logo = File:Persistence Software logo.svg
| type = Public
| industry = Software
| founded = {{Start date and age|1991}} in San Mateo, California, United States
| founders = {{ubl|Derek Henninger|Christopher Keene|Richard Jensen}}
| defunct = {{End date|2004}}
| fate = Acquired by Progress Software
| num_employees =
| num_employees_year =
}}
Persistence Software was an American software company that operated from 1991 to 2004. Persistence was based in San Mateo, California, founded in 1991 by Derek Henninger, Christopher Keene, and Richard Jensen, and developed software for object-relational mapping. In 1999, Persistence Software went public on NASDAQ under the ticker symbol PRSW. In 2004, Progress Software bought Persistence.
History
Persistence Software was founded in 1991 by Derek Henninger, Christopher Keene, and Richard Jensen in San Mateo, California.
The company started life as a spinoff from Lighthouse Design. As the original NeXTSTEP computer shipped with a relational database and Objective-C, Lighthouse engineers created a simple mapping utility called Exploder to store objects in a relational database.
The Persistence team worked with Stanford University's professors Gio Wiederhold and [http://logic.stanford.edu/people/keller/ Arthur M Keller], who was the chief technical advisor, to extend the object-relational mapping technology by adding the concepts of mapping related objects.{{Cite FTP |date=August 1995|author1=Agarwal, Shailesh |author2=Keene, Christopher |author3=Keller, Arthur M. | url=ftp://db.stanford.edu/pub/keller/1995/high-perf.pdf |server=Stanford University|url-status=dead| title=Architecting Object Applications for High Performance with Relational Databases }}
Persistence created a series of products that integrated object-to-relational mapping, caching, and cache synchronization with automated cache management.
{{cite web
|date=May 1993
|author1=Jensen, Richard |author2=Agarwal, Shailesh |author3=Keller, Arthur M. | url=http://infolab.stanford.edu/pub/keller/1995/reflections-object-relational.pdf
| title=Reflections on Object-Relational Applications
| publisher=SIGMOD
}}
|date=October 1995
|author1=Turner, Paul |author2=Keller, Arthur M. | url=http://infolab.stanford.edu/pub/keller/1995/reflections-object-relational.pdf
| title=Reflections on Object-Relational Applications
| publisher=OOPSLA Workshop on Object and Relational Databases}}
The products were marketed under the names PowerTier, EdgExtend, and DirectAlert.{{cite web |date=August 2004 | url=http://www.thefreelibrary.com/Persistence+Software+and+Sun+Microsystems,+Inc.+Sign+Technology...-a020772349 | title=Persistence Software Company Overview | publisher=Bloomberg BusinessWeek}}
Sun Microsystems licensed the Persistence technology in 1998, which was later incorporated into the Enterprise JavaBeans standard.{{cite web |date=August 1995 | url=http://www.thefreelibrary.com/Persistence+Software+and+Sun+Microsystems,+Inc.+Sign+Technology...-a020772349 | title=Persistence Software and Sun Microsystems Sign Technology Licensing Agreement | publisher=Business Wire}}
In 2004, Progress Software bought Persistence for $16 million.{{cite web |date=September 2004 | url=http://www.progress.com/en/inthenews/progress-software-co-9272004.html | title=Progress Software buys Persistence | publisher=Progress Software}}{{cite web |date=September 2004 | url=http://www.informationweek.com/progress-software-to-buy-persistence/47903124 | title=Progress Software To Buy Persistence | publisher=Information Week}}
References
{{Reflist}}
External links
- [http://www.serverwatch.com/sreviews/article.php/1376031/PowerTier----A-cache-based-transaction-processing-application-server-designed-for-high-performance-and-scalability.htm PowerTier overview from ServerWatch].
- [http://www2.sys-con.com/itsg/virtualcd/java/archives/0507/milbery56/index.html PowerTier 6 product review from Java Developer's Journal]
Category:Defunct software companies of the United States
Category:Software companies based in California
Category:Defunct companies based in the San Francisco Bay Area
Category:Software companies established in 1991
Category:Software companies disestablished in 2004