![]() The file dictionary may contain metadata to describe the contents or to output the contents of a file.įor hashed files, a U2 system uses a hashing algorithm to allocate the file's records into groups based on the record IDs. The data file contains records that store the actual data. Each of these classes of VOC entries can also be created by a user.įiles are similar to tables in a relational database in that each file has a unique name to distinguish it from other files and zero to multiple unique records that are logically related to each other.įiles are made of two parts: a data file and a file dictionary (DICT). This includes the system's VOC ( vocabulary) file that contains every command, filename, keyword, alias, script, and other pointers. Accounts are directories stored on the host operating system that initially contain the set of files needed for the system to function properly. Systems are made of one or more accounts. The U2 portfolio is grouped under the name RocketU2. On 1 October 2009 it was announced that Rocket Software had purchased the entire U2 portfolio from IBM. IBM subsequently created the Information Management group of which Data Management is one of the sub-areas under which the IBM U2 family comprised UniData and UniVerse along with the tools, SystemBuilder Extensible Architecture (SB/XA), U2 Web Development Environment (U2 Web DE) and wIntegrate. IBM subsequently acquired the database division of Informix in April 2001, making UniVerse and UniData part of IBM's DB2 product family. In March 2000, Ardent Software was acquired by Informix. In 1997, the Unidata Corporation merged with VMark Systems to form Ardent Software. Both Universe and Unidata are used for vertical application development and are embedded into the vertical software applications. UniVerse was originally developed by VMark Software and UniData was originally developed by the Unidata Corporation. ![]() The family also includes developer and web-enabling technologies including SB/XA ( sometimes known as SB+ or SystemBuilder), U2 Web Development Environment (WebDE), UniObjects connectivity API and wIntegrate terminal emulation software. They are both derivatives of the Pick operating system. Both of these products are operating environments which run on current Unix, Linux and Windows operating systems. It includes two MultiValue database platforms: UniData and UniVerse. Rocket U2 is a suite of database management (DBMS) and supporting software now owned by Rocket Software. ![]()
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