What is composite attributes, simple or automatic attributes and multi valued attributes ?
Composite Attributes, Simple or Automatic Attributes and Multivalued Attributes :-
Composit attributes can be divided into smaller subparts, which represent are basic attributes with independent meanings. Composit attributes can form a hierarchy.
Attributes that are not divisible are called simple or automatic attributes.
A hierarchy of composit attributes.
Most attributes have a single value for a particular entity, such attributes are called single valued. For example ‘age’ is a single valued attribute of person. In some cases an attribute can have a set of values for the same entity. For example a ‘college-degree’ attribute for a person. One person may not have a collage degree, another person may have one and third person may have two or more degrees. So different persons can have different number of values for the college-degree attribute. Such attributes are called multivalued attribute.
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