- 2000s: NoSQL and NewSQL
- 1990s: object-oriented
1980s: on the desktop, dBase lightweight and easy
1970s: SQL DBMS, relational DBMS, Cody’s concept
1960s: navigational DBMS
In the relational model, records are “linked” using virtual keys not stored in the database but defined as needed between the data contained in the records.
Design and modelling
Collage of five types of database models