What is the relationship between Core 4 and CCO?
Core 4 and CCO are complimentary, and can ideally be used together. Core 4 defines the metadata elements used to describe Works and Images, and provides a structure for that metadata to be expressed in XML and shared across systems. CCO is a data content standard, and provides guidelines for selecting, organizing, and formatting data. Some catalogers find it helpful to think of Core 4 as serving a function similar to MARC, and CCO as similar to AACR2 or RDA. 13.
