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Pervasive PSQL is an ACID-compliant DBMS developed by Pervasive Software. It is optimized for embedding in applications and used in several different types of packaged software applications offered by independent software vendors (ISVs) and original equipment manufacturers (OEMs). It is also optimized for software as a service (SaaS) deployment due to a file-based architecture enabling partitioning of data for multitenancy needs. Applications can store the data and the relationships in tables in a relational model (RDBMS) or store the data in a schema-less way with no fixed data model (key-value store). Pervasive PSQL runs on system platforms that include Microsoft Windows, Linux, and Mac OS X. Both 32-bit and 64-bit editions of Pervasive PSQL are available. Editions are also specifically designed for different computer networking deployment needs, such as workgroup, client-server, and highly virtualized environments, including Cloud computing. The original name for Pervasive PSQL was Btrieve. Pervasive Software was acquired by Actian Corporation in 2013. ==Uses and customers== Pervasive PSQL has a world-wide presence, but because Pervasive PSQL is an embedded database, its extensiveness is not well known. “Although Pervasive PSQL has been available for more than twenty five years, not many know of its existence. Competing products such as Oracle and Microsoft SQL Server are, without a doubt, better known and more noticeable. This obscurity is undeserved, because the number of installations worldwide is impressive. ...Organizations buy applications from the ISVs and VARs without knowing that Pervasive PSQL is the engine running all their applications.”〔 “The company has 3,500 partners worldwide, including roughly 200 OEMs and 45 distributors who provide some of the traditional services a value-added reseller does, such as training and consulting work.” Examples of Pervasive distributors include Goldstar Software for the US market,〔(【引用サイトリンク】title=Goldstar Software Inc. Home Page )〕 SOS Software Service AG for the German, Swiss, and Austrian market,〔(【引用サイトリンク】title=SOS Software Service )〕 DSCallands and Southdown House Software Ltd. for the United Kingdom and Irish market, Poly-Asia e-Technology for the Chinese and Southeast Asian market, AG-TECH for the Japanese market, and Stern Software for the South American market.〔(【引用サイトリンク】title=Stern Software )〕 Pervasive PSQL is embedded by OEMs like Sage,〔(【引用サイトリンク】title=Manufacturing ERP Softwareâ€"Sage PFW ERP )〕 ABACUS Research AG (Switzerland), and Unikum (Sweden) in packaged software applications that address the accounting, finance, retail, point-of-sale, entertainment, reservation system, and medical and pharmaceutical industry segments. “Users include Novell, Microsoft, PeachTree Software, Fair Isaac, Disney World, Radio Shack, Cardiff and others.” The accounting industry forms a large part of the Pervasive PSQL market. “In the year ended June 30, 2007, approximately 20 percent of database revenues were from sales related to applications from such vendors as Sage, Intuit, Exact Software, Cyma Systems and Epicor.”〔 An example of the use of PSQL in the medical industry is WebMD. Historically, Pervasive PSQL has served as a DBMS for the small- to medium-sized business (SMB) commercial section. “According to Wayne Kernochan, senior analyst for Illuminata, 'Pervasive takes a different direction from enterprise databases in several different areas, with positive results for low-IT users.'...'Pervasive PSQL is particularly useful and offers especially low TCO in mass-deployment architectures, wherein multiple workgroups or branch offices in multiple localities each use a local server which may be linked back to a central server,’ added Kernochan.”〔(【引用サイトリンク】url=http://news.thomasnet.com/fullstory/Software-provides-growth-solution-for-organization-databases-531641 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pervasive PSQL」の詳細全文を読む スポンサード リンク
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