Journal of Computer and System Sciences
Set constructors in a logic database language
Journal of Logic Programming
Evaluating queries with generalized path expressions
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
STRUDEL: a Web site management system
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
PODS '97 Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Regular path queries with constraints
PODS '97 Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Handbook of formal languages, vol. 3
Path constraints on semistructured and structured data
PODS '98 Proceedings of the seventeenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
The Araneus Web-based management system
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
GraphLog: a visual formalism for real life recursion
PODS '90 Proceedings of the ninth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
PODS '99 Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
WWW '99 Proceedings of the eighth international conference on World Wide Web
XML-GL: a graphical language for querying and restructuring XML documents
WWW '99 Proceedings of the eighth international conference on World Wide Web
Data on the Web: from relations to semistructured data and XML
Data on the Web: from relations to semistructured data and XML
SAC '00 Proceedings of the 2000 ACM symposium on Applied computing - Volume 2
Comparative analysis of five XML query languages
ACM SIGMOD Record
Foundations of Databases: The Logical Level
Foundations of Databases: The Logical Level
COL: A Logic-Based Language for Complex Objects
EDBT '88 Proceedings of the International Conference on Extending Database Technology: Advances in Database Technology
ICDT '97 Proceedings of the 6th International Conference on Database Theory
W3QS: A Query System for the World-Wide Web
VLDB '95 Proceedings of the 21th International Conference on Very Large Data Bases
A Declarative Language for Querying and Restructuring the Web
RIDE '96 Proceedings of the 6th International Workshop on Research Issues in Data Engineering (RIDE '96) Interoperability of Nontraditional Database Systems
A graph grammars based framework for querying graph-like data
Data & Knowledge Engineering - Special issue: ER 2003
Expert Systems with Applications: An International Journal
GMQL: A graphical multimedia query language
Knowledge-Based Systems
Querying business process model repositories
World Wide Web
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In this paper we present a graphical query language for XML. The language, based on a simple form of graph grammars, permits us to extract data and reorganize information in a new structure. As with most of the current query languages for XML, queries consist of two parts: one extracting a subgraph and one constructing the output graph. The semantics of queries is given in terms of graph grammars. The use of graph grammars makes it possible to define, in a simple way, the structural properties of both the subgraph that has to be extracted and the graph that has to be constructed. We provide an example-driven comparison of our language w.r.t. other XML query languages, and show the effectiveness and simplicity of our approach.