DB2 is a database management system also referred to as DB2 AS400. It is known for its multi-support and security components. AS400 Db2, or Database 2, is a group of relational database products designed and offered by IBM. You may wonder, why is it called relational. Well, because everything in this database is a relation, hence it is called relational. DB2 for IBM i has been empowering enterprises to small-sized companies to design data models that are easily accessible through queries. To serve this purpose, IBM introduced an English-like Structured Query Language (SQL). The language enables easy creation of data sets and tables to access and manipulate the data organized.