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The hyperset approach to WEB-like or semistructured databases is outlined. WDB is presented either (i) as a finite edge-labelled graph or, equivalently, (ii) as system of (hyper)set equations or (iii) in a special XML-WDB format convenient both for distributed WDB and for including arbitrary XML elements in this framework. The current state of affairs on(More)
A construction of fully abstract typed models for PCF and PCF+ (i.e., PCF + " parallel conditional function "), respectively, is presented. It is based on general notions of sequential computational strategies and wittingly consistent non-deterministic strategies introduced by the author in the seventies. Although these notions of strategies are old, the(More)
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