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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Q. A rectangle represents which of the following in an ERD?

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Q. An oval represents which of the following in an ERD?

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Q. An entity name should be which of the following?

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Q. An attribute name should be which of the following?

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Q. A binary relationship cannot be which of the following?

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Q. If there are two entities with a relationship between them, and one of the entities is completely dependent on the other, then which of the following must exist?

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Q. A binary relationship is which of the following?

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Q. When the minimum number of instances of an entity is one, you know which of the following?

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Q. When the minimum and maximum number of instances of an entity is one, you know which of the following?

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Q. A good business rule is which of the following?

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