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Db2 is a line of data management products from IBM. It includes a well-known relational database management system (RDMS) that IBM introduced in 1983 to run on its MVS (Multiple Virtual Storage) mainframe platform. The name DB/2 originally referred to IBM's shift from a hierarchical database model to the relational database model. IBM rebranded the line of database products Db2 in 2017.
Although DB2 was initially designed to work exclusively on IBM mainframe platforms, it was later ported to other widely used operating systems, including UNIX, Windows and Linux and now supports non-relational structures such as JSON and XML. Today, Db2 plays an integral part of IBM’s information management portfolio both locally and in the cloud, making it possible for organizations of varying sizes to handle large quantities of data and serve large number of users concurrently.
Techopedia Explains Db2
A relational database allows for a declarative model of the data and access to it via queries. For that purpose, IBM invented the now de-facto standard SQL (Structured Query Language). SQL is a very simple, English-like language which facilitates table creation, accessing and the manipulation of the data contained herein.
Multiple entries in tables (called records) can be inserted, deleted and updated at the same time by concurrent users using commands specified in SQL. The range of computing platforms that DB2 runs on is wide, from mainframes and large distributed platforms to smaller scale PCs. In the 1990s, a version of DB2 called LUV (Linux, Unix, Windows) was introduced, marking the porting of the database to smaller-type computing platforms. The highly advanced features and security of DB2 makes it a widely used database in the modern software industry.
