Q. An entity set that does not have sufficient attributes to form a primary key is a

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Q. In an E-R diagram attributes are represented by

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Q. In case of entity integrity, the primary key may be

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Q. In an E-R diagram an entity set is represent by a

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Q. E-R model uses this symbol to represent weak entity set ?

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Q. Which of the following are the properties of entities?

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Q. What is a relationship called when it is maintained between two entities?

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Q. A set of possible data values is called

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Q. Which of the following is another name for weak entity?

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Q. In E-R Diagram derived attribute are represented by

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Q. An instance of relational schema R (A, B, C) has distinct values of A including NULL values. Which one of the following is true?

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Q. In E-R Diagram relationship type is represented by

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Q. In E-R diagram generalization is represented by

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Q. Database supports _______ types of database schema's.

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Q. Which of the following are valid types of Database Schema's ?

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Q. Which of the following schema is present at highest level ?

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Q. Map of concepts and their relationships is represented by __________ Schema.

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Q. A map of entities and their attributes and relations is represented by ____________.

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Q. Arrange the database Schema's in Appropriate order -

1. Logical Schema
2. Conceptual Level
3. Physical Level

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Q. Schema Definition is written by _________.

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