The “realized by” relationship may link an expression to a person or corporate body responsible for the realization of a work. It is similar in function to the “created by” relationship, but it implies a difference in the nature of the relationship that parallels the difference between work and expression as entities. A person or corporate body responsible for the intellectual or artistic content of a work is responsible for the conception of the work as an abstract entity; a person or corporate body responsible for the expression of the work is responsible for the specifics of the intellectual or artistic realization or execution of the expression. The logical connection between an expression and a related person or corporate body serves as the basis both for identifying the person or corporate body responsible for an individual expression and for ensuring that all expressions realized by a person or corporate body are linked to that person or corporate body. [Functional Requirements for Bibliographic Records: Final Report, p.61]
powered by 
