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Database Systems: Concepts, Design and Applications by S. K. Singh

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State True/False

1.E-R model was first introduced by Dr. E.F. Codd.
2.E-R modelling is a high-level conceptual data model developed to facilitate database design.
3.E-R model is dependent on a particular database management system (DBMS) and hardware platform.
4.A binary relationship exists when an association is maintained within a single entity.
5.A weak entity type is independent on the existence of another entity.
6.An entity type is a group of objects with the same properties, which are identified by the enterprise as having an independent existence.
7.An entity occurrence is also called entity instance.
8.An entity instance is a uniquely identifiable object of an entity type.
9.A relationship is an association among two or more entities ...

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