McCallum, S.H.: ¬A look at new information retrieval protocols : SRU, OpenSearch/A9, CQL, and XQuery (2006)
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- Abstract
- Libraries have a large stake in search protocols because library systems are diverse yet library users need to access multiple sites without learning the search syntax of each site. This paper reviews and compares the relative advantages of several of the newest search protocols and query languages: Search via URL (SRU), OpenSearch, Contextual Query Language (CQL), and XQuery. The models for SRU and OpenSearch operations are described in order to explain differences in functionality - keyword search and simple data record return for OpenSearch and richer search with multiple format data return for SRU. The advantages of CQL are described along with possible complementary uses of the highly detailed and complex XQuery being developed for XML.
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