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Asked Dec 8, 2019
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im not knowin the meaning of derived attribute and identifying atrribute

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Entities are defined by their properties, called attributes. All attributes have meanings, such as the name, gender, and age as attributes of a student entity. There is a category or set of values that attributes can be given. For example, the name of a student cannot be a numerical value. It's got to be alphabetic. The age of a student can't be negative, etc....

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