FILE SYSTEMS ON TAPES FS ON MAGNETIC DISK PRAERELATIONAL SYSTEMS ����Network�Model������������������� RELATIONAL SYSTEMS ����Relational�DB��������������������� POSTRELATIONAL SYSTEMS � � |
ORACLE V2Larry J. Ellison founded Software Development Laboratories in 1977. In 1979 SDL changed its company name to Relational Software, Inc. (RSI) and introduced its product Oracle V2 as the first commercially-available relational database system. The version did not support transactions, but implemented the basic SQL functionality of queries and joins. Larry Ellison developed a relational database system that based on Codd�s paper. Although IBM had a prototype of a relational database, System R, IBM didn�t really believe in its success. But Ellison believed in the relational idea. RSI never released a version 1, but they called the first version version 2 (ORACLE V2) as a marketing gimmick, because Ellison thought that consumers wouldn�t buy a version 1. So RSI, later Oracle Corporation, came onto the market two years before the first appropriate IBM product called SQL/Data System (SQL/DS).� In 1983 RSI changed its name and becoming known as Oracle Corporation to align itself more closely with its flagship product. Then Oracle version 3 was released which supported commit and rollback transaction functionalities. Platform support was extended to UNIX with this version, which until then had run on Digital VAX/VMS systems. Then Oracle version 3 was released which supported commit and rollback transaction functionalities. Platform support was extended to UNIX with this version, which until then had run on Digital VAX/VMS systems. In 1984 Oracle version 4 was released which supported read consistency and in 1985 the Oracle DBMS began supporting the Client-Server model, with networks becoming available in the mid 80s. Oracle version 5.0 supported distributed querying.
ORACLE's product development
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