Wgu c170 chapter 2 Study guides, Class notes & Summaries

binary relationship -An ER term for an association (relationship) between two entities. For example, PROFESSOR teaches CLASS. cardinality -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...

binary relationship -An ER term for an association (relationship) between two entities. For example, PROFESSOR teaches CLASS. cardinality -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...

binary relationship -An ER term for an association (relationship) between two entities. For example, PROFESSOR teaches CLASS. cardinality -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...

binary relationship -An ER term for an association (relationship) between two entities. For example, PROFESSOR teaches CLASS. cardinality -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...