| 31. | Hierarchical model is also called |
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Answer: (a).Tree structure
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| 32. | A main purpose of DBMS is to provide ____________ view of data to user. |
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Answer: (d).None of these
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| 33. | ____________ means to hide certain details of how data is stored and maintain. |
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Answer: (a).Data Abstraction
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| 34. | There are _________ levels of data abstraction. |
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Answer: (b).3
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| 35. | In data abstraction which is lowest level of abstraction ? |
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Answer: (b).Physical Level
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| 36. | _______ of abstraction explains how data is actually stored and describes the Data Structure and Access methods used by database. |
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Answer: (c).Physical Level
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| 37. | "What data is stored ?" is described by __________ level of abstraction in DBMS. |
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Answer: (c).Conceptual
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| 38. | Part of entire database is shown by ________ level of abstraction. |
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Answer: (c).View
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| 39. | If user doesn't know anything about the complexity of database application then that user is called as _____________. |
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Answer: (a).Naive User
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| 40. | Data Model is collection of conceptual tools for describing |
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Answer: (d).All of these
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