- MS Sql Server
- 795
- January-26-2018
- by Rizwan Saqib
Types Of Database
Established:
1.DB2
Since the 1970s, when IBM Research invented the Relational Model and the Structured Query Language (SQL), IBM has developed a complete family of data servers. Development started on mainframe platforms such as Virtual Machine (VM), Virtual Storage Extended (VSE), and Multiple Virtual Storage (MVS). In 1983, DB2 for MVS Version 1 was born. "DB2" was used to indicate a shift from hierarchical databases—such as the Information Management System (IMS) popular at the time—to the new relational databases. DB2 development continued on mainframe platforms as well as on distributed platforms.1 Figure 1.1 shows some of the highlights of DB2 history.Db2 is supported across Linux, Unix, and Windows operating systems.
2.MySQL 1995
The My SQL project was started by Michael Widenius (Monty), David Axmark and Allan Larsson. For the first 6 years it was commercially represented by TCX, a company owned by one of the 3 founders. Monty was in Finland, David and Allan in Sweden.
3.Oracle
Larry Ellison co-founded Oracle Corporation in 1977 with Bob Miner and Ed Oates under the name Software Development Laboratories (SDL). ... In 1995, Oracle Systems Corporation changed its name to Oracle Corporation, officially named Oracle, but sometimes referred to as Oracle Corporation, the name of the holding company.
4.PostgreSQL
Given its powerful and advanced features, you may wonder how such a valuable piece of software came to be both free and open source. As with many other key open source projects, the answer starts at the University of California at Berkeley (UCB).
Postgre SQL, originally called Postgres, was created at UCB by a computer science professor named Michael Stone braker, who went on to become the CTO of Informix Corporation. Stonebraker started Postgres in 1986 as a followup project to its predecessor, Ingres, now owned by Computer Associates. The name Postgres thus plays off of its predecessor (as in "after Ingres"). Ingres, developed from 1977 to 1985, had been an exercise in creating a database system according to classic RDBMS theory. Postgres, developed between 1986-1994, was a project meant to break new ground in database concepts such as exploration of "object relational" technologies.
5.SQLite
is a relational database management system contained in a C programming library. In contrast to many other database management systems, SQ Lite is not a client–server database engine. Rather, it is embedded into the end program.
SQ Lite is ACID-compliant and implements most of the SQL standard, using a dynamically and weakly typed SQL syntax that does not guarantee the domain integrity.[5]
SQ Lite is a popular choice as embedded database software for local/client storage in application software such as web browsers. It is arguably the most widely deployed database engine, as it is used today by several widespread browsers, operating systems, and embedded systems (such as mobile phones), among others.[6] SQ Lite has bindings to many programming languages.
6.SQL Server
In 1988, Microsoft released its first version of SQL Server. It was designed for the OS/2 platform and was developed jointly by Microsoft and Sybase. During the early 1990s, Microsoft began to develop a new version of SQL Server for the NT platform. While it was under development, Microsoft decided that SQL Server should be tightly coupled with the NT operating system. In 1992, Microsoft assumed core responsibility for the future of SQL Server for NT. In 1993, Windows NT 3.1 and SQL Server 4.2 for NT were released. Microsoft's philosophy of combining a high-performance database with an easy-to-use interface proved to be very successful. Microsoft quickly became the second most popular vendor of high-end relational database software. In 1994, Microsoft and Sybase formally ended their partnership. In 1995, Microsoft released version 6.0 of SQL Server. This release was a major rewrite of SQL Server's core technology. Version 6.0 substantially improved performance, provided built-in replication, and delivered centralized administration. In 1996, Microsoft released version 6.5 of SQL Server. This version brought significant enhancements to the existing technology and provided several new features. In 1997, Microsoft released version 6.5 Enterprise Edition. In 1998, Microsoft released version 7.0 of SQL Server, which was a complete rewrite of the database engine. In 2000, Microsoft released SQL Server 2000. SQL Server version 2000 is Microsoft's most significant release of SQL Server to date.
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