Q. Consider representation of specialization and generalization, the filled triangle is used to indicate the constraint called

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Q. How is the discriminator of a weak entity set specified?

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Q. An entity set that has a primary key is called as ___________

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Q. The relationship associating the weak entity sets with the identifying entity set is called as ________

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Q. State true or false: Every weak entity set must be associated with an identifying entity.

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Q. State true or false: A weak entity can participate in all the relationships.

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Q. The _________ of the entity set is an actual collection of entities belonging to that entity set.

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Q. A ___________ is an association among several entities.

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Q. The attributes of a relationship are called as _________ attributes

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Q. What are composite attributes?

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Q. Let E be an entity set in a relationship set R. If every entity in E participates in at least one relationships in R, Then the participation of E in R is __________

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Q. Let E be an entity set in a relationship set R. If only some entities in E participate in relationships in R, Then the participation of E in R is __________

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Q. State true or false: We cannot specify keys in the Entity-Relationship model

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Q. State true or false: Multiple attributes combined together can be primary keys

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Q. Which of the following is a good database management practice?

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Q. Which of the following symbols represent entity sets in an ER diagram?

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Q. Which of the following symbols represent relationship sets in an ER diagram

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Q. What do double diamonds represent in an ER diagram

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Q. What does a directed line ( → ) from a relationship set to two entity sets mean?

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Q. How are roles specified in an ER diagram

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