A simple attribute is one that cannot be subdivided.
It is made up of a single element with a distinct existence. Simple attributes cannot be broken down further.
Salary, for instance, can be a simple attribute for an entity employee's age. Simple characteristics are atomic values that cannot be further subdivided. A student's phone number, for instance, has an atomic value of 10 digits.
Simple attributes are independent attributes that cannot be further categorised or separated into any other component in an ER model diagram. These qualities are frequently referred to as atomic qualities.
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