This schema shall define the generic inner structure of one record within the (federated) CLARIN content search. This means it would validate the xml-fragment inside sru:record/sru:recordData and would be referenced in sru:record/sru:recordSchema of the sru:searchRetrieveResponse. It shall allow: a) any metadata about the matched record, including reference to a CMD-record b) separate (metadata) description of full Resource and ResourceFragment (matching part of the resource) c) providing metadata AND content d) various views on the data delivered (text-snippet, image, individual annotation-layers, ...) e) providing links (either as PID or as simple URLs) to any of: Resource, ResourceFragment, Metadata (CMD-record), DataViews Taken from oai-pmh: Metadata must be expressed in XML that complies with another XML Schema (namespace=#other). Metadata must be explicitly qualified in the response. So this could be dublincore, OAI_DC, MODS, OLAC or whatever. the content expressed in XML that complies with another XML Schema (namespace=#other). Analogous to metadataType. This is obviously not exhaustive. a persistent! identifier of given entity. This should be really only used, when a PID is available a URL to given entity, that can be invoked directly (via HTTP)