Coded Notation
Set of alpha-numeric symbols as defined by the body responsible for this resource that uniquely identifies this resource and supports its discovery and use.
Examples include the alpha-numeric code "CCSS.MATH.CONTENT.HSA.CED.A.2" identifying a node in the U.S. Common Core State Standards on creating equations in algebra, or, the code "8021" in the U.S. Standard Industrial Classification (SIC) for identifying the occupational context for "Offices and Clinics of Dentists".
For identifiers that come from a recognized identification scheme use the specific property for that identifier type, such as ceterms:opeID, ceterms:ncesID, ceterms:leiCode, etc., or use ceterms:identifier so that the identification schema can be named.