Formal models of Web queries
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摘要
We present a new formal model of query and computation on the Web. We focus on two important aspects that distinguish the access to Web data from the access to a standard database system: the navigational nature of the access and the lack of concurrency control. We show that these two issues have significant effects on the computability of queries. To illustrate the ideas and how they can be used in practice for designing appropriate Web query languages, we consider a particular query language, the Web calculus, an abstraction and extension of the practical Web query language WebSQL.
论文关键词:World Wide Web,Web Queries,Query Languages,Computability,Formal Models
论文评审过程:Received 20 February 1998, Revised 14 October 1998, Available online 12 February 1999.
论文官网地址:https://doi.org/10.1016/S0306-4379(98)00032-5