Q. What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?

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Q. A multidimensional database model is used most often in which of the following models?

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Q. Which of the following is not a factor to consider when switching from small to large block size?

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Q. The view of total database content is

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Q. Architecture of the database can be viewed as

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Q. In the architecture of a database system external level is the

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Q. In a Hierarchical model records are organized as

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Q. A logical schema

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Q. Conceptual design

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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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