Database Systems: Concepts, Design and Applications

Tick (✓) the Appropriate Answer

1.	E-R Model was introduced by: Dr. E.F. Codd. Boyce. P.P Chen. Chamberlain.
2.	An association among three entities is called: binary relationship. ternary relationship. recursive relationship. none of these.
3.	The association between the two entities is called: binary relationship. ternary relationship. recursive relationship. none of these.
4.	Which data model is independent of both hardware and DBMS? external. internal. conceptual. all of these.
5.	A relationship between the instances of a single entity type is called: binary relationship. ternary relationship. recursive relationship. none of these.
6.	A simple attribute is composed of: single component with an independent existence. multiple components, each with an independent ...