Persistence Software was an American

software Software is a set of computer programs and associated software documentation, documentation and data (computing), data. This is in contrast to Computer hardware, hardware, from which the system is built and which actually performs the work. ...

company that operated from 1991 to 2004. Persistence developed software for object-relational mapping. The company was founded in 1991 by Derek Henninger, Christopher Keene and Richard Jensen in

San Mateo, California San Mateo ( ; ) is a city in San Mateo County, California, on the San Francisco Peninsula. About 20 miles (32 km) south of San Francisco, the city borders Burlingame, California, Burlingame to the north, Hillsborough, California, Hillsboro ...

, working with Stanford Professors

Gio Wiederhold Giovanni Corrado Melchiore Wiederhold (June 24, 1936 – December 26, 2022) was an Italian-born American computer scientist who spent most of his career at Stanford University. His research focused on the design of large-scale database managem ...

an
Arthur M Keller
who was the Chief Technical Advisor. In 1999, Persistence Software went public on

NASDAQ The Nasdaq Stock Market () (National Association of Securities Dealers Automated Quotations Stock Market) is an American stock exchange based in New York City. It is the most active stock trading venue in the US by volume, and ranked second ...

under the ticker symbol PRSW. In 2004,

Progress Software Progress Software Corporation (Progress) is an American public company that offers software for creating and deploying business applications. Headquartered in Burlington, Massachusetts with offices in 16 countries, the company posted revenues ...

bought Persistence for $16 million.

History

Persistence Software started life as a spinoff from

Lighthouse Design Lighthouse Design Ltd. was an American software company that operated from 1989 to 1996. Lighthouse developed software for NeXT computers running the NeXTSTEP operating system. The company was founded in 1989 by Alan Chung, Roger Rosner, Jonatha ...

. As the original

NeXTSTEP NeXTSTEP is a discontinued object-oriented, multitasking operating system based on the Mach kernel and the UNIX-derived BSD. It was developed by NeXT Computer in the late 1980s and early 1990s and was initially used for its range of proprieta ...

computer shipped with a relational database and

Objective-C Objective-C is a general-purpose, object-oriented programming language that adds Smalltalk-style messaging to the C programming language. Originally developed by Brad Cox and Tom Love in the early 1980s, it was selected by NeXT for its N ...

, Lighthouse engineers had created a simple mapping utility called Exploder to store objects in a relational database. The Persistence team worked with Stanford Professors to extend the object-relational mapping technology by adding the concepts of mapping related objects. Persistence created a series of products that integrated object-to-relational mapping, caching, and cache synchronization with automated cache management. The products were marketed under the names PowerTier, EdgExtend, and DirectAlert.

Sun Microsystems Sun Microsystems, Inc. (Sun for short) was an American technology company that sold computers, computer components, software, and information technology services and created the Java programming language, the Solaris operating system, ZFS, ...

licensed the Persistence technology in 1998 which was later incorporated into the

Enterprise JavaBeans Jakarta Enterprise Beans (EJB; formerly Enterprise JavaBeans) is one of several Java APIs for modular construction of enterprise software. EJB is a server-side software component that encapsulates business logic of an application. An EJB ...

standard.

References

{{Reflist

External links

PowerTier overview from ServerWatch

Defunct software companies of the United States Software companies based in California Defunct companies based in the San Francisco Bay Area Software companies established in 1991 Software companies disestablished in 2004 1991 establishments in California 2004 disestablishments in California