23. A computing system including memory and a processor that is configured to perform all of the steps of claim 9 .
9. A method of using metadata about a data collection to facilitate access to DataItems within such collection, where DataItems are predefined entities comprising a plurality of associated constituent DataDetails, and wherein the metadata includes: a) DetailSelectors that are Level-1 Selectors and each reference at least one particular Information Detail within the data collection; b) Level-N GlueSelectors for at least one value of N, each i) having a representative GlueID and comprising association links between such GlueSelector and a plurality of lower-level Selectors, ii) linked to, and representing, all DetailSelectors that are represented by such lower-level Selectors or have an association link to such Level-N GlueSelector, wherein all such represented DetailSelectors are contextually related due to describing a same Subitem within a DataItem; c) a plurality of Items that each reference a corresponding DataItem and comprise indications of association links to one or more GlueSelectors of any level, thereby reflecting that the DataItem comprises Information Details suitably matching those represented by the one or more GlueSelectors; d) wherein, using standard Graph Theory terminology, the association links together with the Selectors and Items they associate can be represented as a K-partite simple Graph having at least one cycle, in which each partite set consists of all vertices representing a solitary level of Selectors or Items, each association link between Selectors and different Selectors or Items is a Graph Edge, and K is the level of Items and is one plus the highest Selector level; the method comprising: A) accepting as a term for a search query a user indication of an Information Detail within the data collection; B) responsively determining, by means of the metadata, a set of further Information Details which, if added to terms currently selected for a search query, would form a new search query that suitably matches at least one predefined DataItem within the data collection; and C) indicating to the user at least some of such further Information Details as available choices to add to the currently selected terms to form a new search query.