The design of an extensible system, called the object shell, to define and query an object-oriented view of an existing database is described. An object-oriented view is defined by identifying the object types
This is the most common form of DBMS.Invented by E.F. Codd, the only way to view the data is as a set of tables. Because there can berelationships between the tables, people often assume that is what the word"relational" means. Not so.Codd was a mathematician and the word "...