DBMS-Entity Relationship (E-R) Model Questions and Answers
The Entity Relationship (E-R) Model is a key database design concept in DBMS that represents real-world data relationships. These programming interview questions with answers help you master how entities, attributes, and relationships interact within a database schema. Understanding E-R diagrams is essential for database normalization, query design, and relational mapping — skills highly valued in Infosys, TCS, Capgemini, and Wipro technical interviews. Practicing DBMS E-R Model questions with answers ensures conceptual clarity and improves your ability to design and interpret data models. Start now to enhance your database fundamentals and succeed in both academic and placement-level assessments.
DBMS-Entity Relationship (E-R) Model
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38 questions
11. The participation is optional if an entity's existence requires the existence of an associated entity in a particular relationship.
- TRUE
- FALSE
15. The degree of a relationship is the number of entities associated or participants in the relationship.
- TRUE
- FALSE
16. The connectivity of a relationship describes a constraint on the mapping of the associated entity occurrences in the relationship.
- TRUE
- FALSE
17. In case of mandatory existence, the occurrence of that entity need not exist.
- TRUE
- FALSE
19. In E-R diagram, if the attribute is simple or single-valued then they are connected using a single line.
- TRUE
- FALSE
20. In E-R diagram, if the attribute is derived then they are connected using double line.
- TRUE
- FALSE