DBMS-Enhanced Entity-Relationship (EER) Model Questions and Answers
The DBMS Enhanced Entity-Relationship (EER) Model questions with answers help students understand advanced database modeling techniques like specialization, generalization, and aggregation. These database programming questions and answers are important for placements and competitive exams where data modeling and schema design play a key role. Practicing EER model MCQs improves your conceptual understanding and helps you perform better in DBMS interviews and tests by TCS, IBM, and Infosys. Learn the extended concepts of ER modeling with clear explanations and real-world examples.
DBMS-Enhanced Entity-Relationship (EER) Model
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57 questions
23. The U-shaped symbols on each line connecting subtype to the circle, indicates that that the subtype is a
- subset of the supertype
- direction of supertype/subtype relationship
- both o these
- none of these
24. The uses of specialisation or generalisation technique for a particular situation depends on
- the nature of the problem
- the nature of the entities and relationships.
- the personal preferences of the database designer.
- all of these.
25. In specialisation, the differences between members of an entity is
- maximized
- minimized
- both of these
- none of these
26. In generalisation, the differences between members of an entity is
- maximized
- minimized
- both of these
- none of these
27. Specialisation is a
- top-down process of defining superclasses and their related subclasses
- bottom-up process of defining superclasses and their related subclasses
- both of these
- none of these.
29. Database design is a process of arrranging the data fields into an organised structure needed by one or more applications.
- TRUE
- FALSE
30. Frequent software changes, without change in specifications, is an indication of a good design
- TRUE
- FALSE