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Question
Which of the following is not a logical data-base structure?
Which of the following is not a logical data-base structure?
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Solution
The correct option is D Chain
Chain is not a logical
data-base structure.
A logical data model is a data model of a
specific problem domain expressed independently of a particular database management product or storage technology
but in terms of data structures such
as relational tables and columns, object-oriented classes, or XML tags.
A daisy chain is
an interconnection of computer devices, peripherals, or network
nodes in series, one after another. It is the computer equivalent of a series electrical
circuit.
Chain is not a logical data-base structure.
A logical data model is a data model of a specific problem domain expressed independently of a particular database management product or storage technology but in terms of data structures such as relational tables and columns, object-oriented classes, or XML tags.
A daisy chain is an interconnection of computer devices, peripherals, or network nodes in series, one after another. It is the computer equivalent of a series electrical circuit.
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