Q. A subschema expresses

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Q. SET concept is used in :

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Q. The conceptual model is

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Q. Which of the following is record based logical model?

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Q. Hierarchical model is also called

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Q. A main purpose of DBMS is to provide ____________ view of data to user.

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Q. ____________ means to hide certain details of how data is stored and maintain.

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Q. There are _________ levels of data abstraction.

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Q. In data abstraction which is lowest level of abstraction ?

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Q. _______ of abstraction explains how data is actually stored and describes the Data Structure and Access methods used by database.

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Q. "What data is stored ?" is described by __________ level of abstraction in DBMS.

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Q. Part of entire database is shown by ________ level of abstraction.

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Q. If user doesn't know anything about the complexity of database application then that user is called as _____________.

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Q. Data Model is collection of conceptual tools for describing

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Q. Data Models in DBMS are classified into ______ categories.

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Q. Which of the following is example of Object based logical model ?

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Q. Entity Relationship model consists of collection of basic objects called _________ and relationship among these objects.

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Q. Object which is distinguishable from other objects by specific set of attributes is called as ___________.

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Q. Association among several entities is called as _____________.

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Q. ______________ express the number of entities to which another entity can be associated via a relationship set.

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