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What is an attribute, an identifier or key, and a compound attribute?

3azzoooz

wrote...

Posts: 635

Rep:

6 years ago

What is an attribute, an identifier or key, and a compound attribute?

What is an attribute, an identifier or key, and a compound attribute?

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1 Reply

Related Topics

Solved An attribute that can be calculated from related attribute values is called a(n) ________ attribute.
Solved Class Department { attribute short dept_number; attribute string dept_name; attribute string office_
Solved When selecting an identifier, one should:
Solved An attribute that appears as a nonkey attribute in one relation and as a primary key attribute (or ...
Solved Attribute A _____ attribute B if all of the rows in the table that agree in value for attribute A ...
Solved Ideally, an entity identifier is composed of _____ attribute(s).
Solved A(n) _____ is the set of possible values for a given attribute.
Solved A composite identifier is a primary key composed of more than one attribute.

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dgonzalez228

wrote...

#1

6 years ago

- An attribute is a descriptor of a data entity (Object). For example a Customer (object) has a name (attribute). So although attributes are also nouns, they are descriptor or qualifier nouns.
- An identifier or key is an attribute that can uniquely

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