XML Based Implementation of a Bibliographic Database and Recursive Queries

The structured query language (SQL) of relational database models does not have the expressive power to implement recursive queries. Consequently, recursive queries are implemented as an application program in the host language. The newly developed XML schema provides a different setting for database design and query implementation. In this paper, we design and implement an XML schema and a set of associated queries for a bibliographic database. We will investigate and demonstrate the capabilities of Xpath, Xquery, and XSLT as standard query languages for XML-based databases. We will also show efficient implementations of recursive queries in XSLT.