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2. dBase - Wikipedia

   en.wikipedia.org/wiki/DBase

   dBase is an application development language and integrated navigational database management system which Ashton-Tate labeled as "relational" but it did not meet the criteria defined by Dr. Edgar F. Codd's relational model. "dBASE used a runtime interpreter architecture, which allowed the user to execute commands by typing them in a command ...

3. Hugh Darwen - Wikipedia

   en.wikipedia.org/wiki/Hugh_Darwen

   From 1978 to 1982 he was a chief architect on Business System 12, a database management system that faithfully embraced the principles of the relational model. [3] He worked closely with Christopher J. Date and represented IBM at the ISO SQL committees (JTC1 SC32 WG3 Database languages, [4] WG4 SQL/MM [5]) until his retirement from IBM.

4. Database - Wikipedia

   en.wikipedia.org/wiki/Database

   Formally, a "database" refers to a set of related data accessed through the use of a "database management system" (DBMS), which is an integrated set of computer software that allows users to interact with one or more databases and provides access to all of the data contained in the database (although restrictions may exist that limit access to particular data).

5. Database administration - Wikipedia

   en.wikipedia.org/wiki/Database_administration

   Database administration is the function of managing and maintaining database management systems (DBMS) software. Mainstream DBMS software such as Oracle , IBM Db2 and Microsoft SQL Server need ongoing management.

6. IDMS - Wikipedia

   en.wikipedia.org/wiki/IDMS

   These pages are used to keep track of the free space available in each page in the database. To reduce I/O requirements, the free space is only tracked for all pages when the free space for the area falls below 30%. Four methods are available for storing records in an IDMS database: Direct, Sequential, CALC, and VIA.

7. DBM (computing) - Wikipedia

   en.wikipedia.org/wiki/DBM_(computing)

   The name is a three-letter acronym for DataBase Manager, and can also refer to the family of database engines with APIs and features derived from the original dbm. The dbm library stores arbitrary data by use of a single key (a primary key ) in fixed-size buckets and uses hashing techniques to enable fast retrieval of the data by key.