In an Entity-Relationship (ER) model, suppose – McqOptions

MCQOPTIONS

1.	In an Entity-Relationship (ER) model, suppose
A.	Every entity in E1 is associated with exactly one entity in E2.
B.	Some entity in E1 is associated with more than one entity in E2.
C.	Every entity in E2 is associated with exactly one entity in E1.
D.	Every entity in E2 is associated with at most one entity in E1.
Answer» B. Some entity in E1 is associated with more than one entity in E2.

Discussion

No Comment Found

Related MCQs

An ER model of a database consists of entity types A and B. These are connected by a relationship R which does not have its own attribute. Under which one of the following conditions, can the relational table for R be merged with that of A?
In E-R model, Y is the dominant entity and X is the subordinate entity.
Consider the following Entity Relationship Diagram (ERD) Which of the following possible relations will not hold if the above ERD is mapped into a relation model ?
An aggregation association is drawn using which symbol?
In ER diagrams weak entity set is represented by _____ and weak entity set has always ______ participation with respect to its identifying relationship.
Considering binary relationships, possible cardinality ratios are:
A double ellipse represents _________ attribute in ER-diagram.
In an Entity-Relationship (ER) model, suppose
Conceptual level, internal level and External level are three components of the three-level RDBMS architecture. which of the following is not of the conceptual level?
______ mean unification of several otherwise distinct data files with data redundancy among those files partially or wholly eliminated.