WGU C175 - Data Management Foundations - Ch. 4 Terms. Full Coverage. Easy Mastery, VERIFIED 2024

binary relationship - -An ER term for an association (relationship) between two entities. For example, PROFESSOR teaches CLASS. cardinality - -A property that assigns a specific value to connectivity and expresses the range of allowed entity occurrences associated with a single occurrence of the related entity. composite attribute - -An attribute that can be further subdivided to yield additional attributes. For example, a phone number such as may be divided into an area code (615), an exchange number (898), and a four-digit code (2368). Compare to simple attribute. composite identifier - -In ER modeling, a key composed of more than one attribute. derived attribute - -An attribute that does not physically exist within the entity and is derived via an algorithm. For example, the Age attribute might be derived by subtracting the birth date from the current date.