Database Management System (DBMS)

71. How many levels of abstraction in DBMS:

1. 2
2. 3
3. 4
4. 5

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72. Which are the three levels of abstraction:

1. Physical
2. Logical
3. External
4. All of these

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73. How many types of data independence:

1. 1
2. 2
3. 3
4. 4

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74. Which are the types of data independence:

1. Physical
2. Logical
3. Both
4. All of these

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75. Which is the transformation of requests and results between different levels of abstraction:

1. Evaluation
2. Mapping
3. Compiler
4. Precompiler

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76. Which mapping exists between the conceptual and internal levels:

1. Conceptual
2. Internal
3. Both
4. None

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77. Which mapping exists between the external and conceptual levels:

1. Conceptual
2. Internal
3. Both
4. None

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78. The related and interconnected software components of a DBMS are described by the ___________:

1. Logical architecture
2. Physical architecture
3. Both
4. None

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79. Which are the types of physical DBMS architecture can be split:

1. Back end
2. Front end
3. Both
4. None

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80. In which end is really just any application that runs on top of the DBMS and acts as a user interface:

1. Back end
2. Front end
3. Both
4. None

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