Explanatory Question
What is Complex attributes?
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Answer with Explanation
The attributes that are formed by arbitrarily nesting the composite and multivalued attributes are called complex attributes. This is represented by grouping the components of a composite attribute between parentheses ‘()’ and by displaying the multi-valued attributes between braces ‘{}’, and attributes separated by commas. For example, a publisher can have offices at different places, each with different addresses and each office having multiple phones (Figure below).
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