Some of these are to be left as is, but some need to be adjusted to facilitate representation in the relational model. Composite attributes are those that consist of a hierarchy of attributes. Multiva...Some of these are to be left as is, but some need to be adjusted to facilitate representation in the relational model. Composite attributes are those that consist of a hierarchy of attributes. Multivalued attributes are attributes that have a set of values for each entity. An example of a multivalued attribute from the COMPANY database, as seen in Figure 8.2.3, are the degrees of an employee: BSc, MIT, PhD. Derived attributes are attributes that contain values calculated from other attributes.
