Database Systems: Concepts, Design and Applications

Fill in the Blanks

1.	E-R model was introduced by ________ in ________.
2.	An entity is an ________ or ________ in the real word.
3.	A relationship is an ________ among two or more ________ that is of interest to the enterprise.
4.	A particular occurrence of a relationship is called a ________.
5.	The database model uses the (a) ________, (b) ________ and (c) ________ to construct representation of the real world system.
6.	The relationship is joined by ________ to the entities that participate in the relationship.
7.	An association among three entities is called ________.
8.	A relationship between the instances of a single entity type is called ________.
9.	The association between the two entities is called ________.
10.	The actual count of elements ...