Originally published in 1979, Clifford Geertz’s essay on the Moroccan bazaar is a classic ethnographic account of the interplay of economic, social, and religious lives in the bustle of transaction. Drawing on years of fieldwork in the Middle Atlas town of Sefrou, Geertz explores how actors...

More and more application domains, from financial market analysis to weatherprediction, from monitoring supermarket purchases to monitoring satellite images, arebecomingly increasingly data-intensive. The result is massive databases that are growingat a rapid rate - it has been estimated that...

While quot;nowquot; is expressed in SQL as CURRENT-TIMESTAMP within queries, this value cannot bestored in the database. However, this notion of an ever-increasing current-time value has beenreflected in some temporal data models by inclusion of database-resident variables, such asquot;now,quot;...

Numerous proposals for extending the relational data model to incorporate the temporaldimension of data have appeared in the past several years. These proposals have differedconsiderably in the way that the temporal dimension has been incorporated both into thestructure of the extended relations...

Numerous proposals for extending the relational data model to incorporate the temporaldimension of data have appeared over the past decade. It has long been known that theseproposals have adopted one of two basic approaches to the incorporation of time into theextended relational model. Recent...

The concept of an historical database is introduced as a tool formodelling the dynamic nature of some part of the real world. Just as first-orderlogic has been shown to be a useful formalism for expressing andunderstanding the underlying semantics of the relational database model,intensional...

It is becoming increasingly apparent that we are on the verge ofseveral new technologies that will offer virtually unlimitedsecondary storage at affordable prices. Database applicationscan be expected to take advantage of this expanded storagecapacity, and a particularly promising area in this...

As part of the operation of an Expert System, adeductive component accesses a database of facts to helpsimulate the behavior of a human expert in a particularproblem domain. The nature of this access is examined, andfour access strategies are identified. Features of each ofthese strategies are...