RDA RELATIONSHIP DESIGNATORS RDA Relationship Designators : Editor of Compilation vs Compiler The editor of a compilation, as defined in I.3.1, is not a creator of a work and thus has to be treated as a 700, not a 100. On the other hand, a compiler (for example of a dictionary, a directory, a bibliography, etc.) can be considered a creator (see I.2.1) and thus can be treated as a 100. Expert remarks by Aaron Kuperman , Law Librarian, Library of Congress : A good rule of thumb is that a compilation needs to consist of works that can (and should) be listed in the contents note. According to RDA Toolkit: I.2.1 Relationship Designators for Creators: Compiler : A person, family, or corporate body responsible for creating a new work (e.g., a bibliography, a directory) by selecting, arranging, aggregating, and editing data, information, etc. For a compiler as a contributor, see editor at I.3.1. According to RDA Toolkit: I...