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GLASS: a graphical query language for semi-structured data

Wei Ni, Tok Wang Ling
2003 Eighth International Conference on Database Systems for Advanced Applications, 2003. (DASFAA 2003). Proceedings.  
To exploit the full power of XML documents, a query language for semistructured data will be a promising and interesting application.  ...  The increase in the use of XML (eXtensible Markup Language) makes the semistructured data more and more important on the Web.  ...  Conclusion and future work GLASS (Graphical query Language for Semi-Structured data) is a powerful visual language to express queries on XML data.  ... 
doi:10.1109/dasfaa.2003.1192402 dblp:conf/dasfaa/NiL03 fatcat:5oyterkbyreqtblw7k3lkvcg6a

QBD*: a graphical query language with recursion

M. Angelaccio, T. Catarci, G. Santucci
1990 IEEE Transactions on Software Engineering  
One of the main problems in the database area is to define query languages characterized by both high expressive power and ease of use.  ...  Furthermore, we compare the expressive power of QBD * and G + , which are the only languages allowing recursive queries to be expressed graphically.  ...  Finally, we are grateful to the anonymous referees for their comments.  ... 
doi:10.1109/32.60295 fatcat:3sbzelblrfcxjbbkimvnxskkei

Comparative Analysis of Five XML Query Languages [article]

Angela Bonifati, Stefano Ceri
1999 arXiv   pre-print
Novel languages for extracting and restructuring the XML content have been proposed, some in the tradition of database query languages (i.e. SQL, OQL), others more closely inspired by XML.  ...  We present a comparison of five, representative query languages for XML, highlighting their common features and differences.  ...  Acknowledgement We like to acknowledge the suggestions and criticisms of Serge Abiteboul, Sara Comai, Jason McHugh, Yannis Papakonstantinou, Dan Suciu, Letizia Tanca and Jennifer Widom to an early presentation  ... 
arXiv:cs/9912015v1 fatcat:y7rl6cds4veb5fm5iky2ztcutm

Graphical Querying of Model-Driven Spreadsheets [chapter]

Jácome Cunha, João Paulo Fernandes, Rui Pereira, João Saraiva
2014 Lecture Notes in Computer Science  
Afterwards, we detail our graphical model-driven querying interface, explaining each part of the interface and showing an example.  ...  This paper presents a graphical interface to query modeldriven spreadsheets, based on experience with previous work and empirical studies in querying systems, to simplify query construction for typical  ...  Acknowledgments: We would like to thank Professor José Creissac Campos for his helpful comments and insight regarding the graphical query interface.  ... 
doi:10.1007/978-3-319-07731-4_42 fatcat:3qwgvb5aqbhofms65fo7g4zog4

Manipulations of Graphs with a Visual Query Language: Application to a Geographical Information System [chapter]

Anne Brossier-Wansek, Michel Mainguenaud
1995 Visual Database Systems 3  
The user draws a graphic representing the properties results have to verify. Keyword Visual query language, Graph manipulations, Geographical Information System S. Spaccapietra et al.  ...  Network-oriented operators are based on graph manipulations whatever the geometric representation is (e.g., a transitive closure of a graph).  ...  We restrict the expressive power to a sub-set of computable queries (Garey, 1979) . This part defines the retained expressive power and presents the graphical definition of these constraints.  ... 
doi:10.1007/978-0-387-34905-3_16 fatcat:y6e757ruobddpo7fmdlnvpuuzi

Visual Query Systems for Databases: A Survey

TIZIANA CATARCI, MARIA F. COSTABILE, STEFANO LEVIALDI, CARLO BATINI
1997 Journal of Visual Languages and Computing  
Visual query systems (VQSs) are query systems for databases that use visual representations to depict the domain of interest and express related requests.  ...  VQSs can be seen as an evolution of query languages adopted into database management systems; they are designed to improve the effectiveness of the human-computer communication.  ...  Thanks are also due to Paola Loizzo and Santo Bellino for their help in preparing the classification tables. This work has been partially supported by MURST 40%. References Visual Query Systems  ... 
doi:10.1006/jvlc.1997.0037 fatcat:jzsf7eugzjcx3nieug2gumdhya

Graphical representation of RDF queries

Andreas Harth, Sebastian Ryszard Kruk, Stefan Decker
2006 Proceedings of the 15th international conference on World Wide Web - WWW '06  
We try to strike a balance between expressiveness of the query language and simplicity and understandability of the graphical notation. We present the primitives of the notation by means of examples.  ...  In this poster we discuss a graphical notation for representing queries for semistructured data.  ...  Specifying a graphical notation for a query language involves a trade-off between user interface complexity and language expressiveness.  ... 
doi:10.1145/1135777.1135914 dblp:conf/www/HarthKD06 fatcat:mn4zvij6zzhktadga5pzospdgy

Low-complexity aggregation in GraphLog and Datalog

Mariano P. Consens, Alberto O. Mendelzon
1993 Theoretical Computer Science  
Acknowledgment We are indebted to Isabel Cruz for fruitful discussions and Steve Cook for his help with the finer points of parallel complexity theory.  ...  It is important to recognize that not all aggregate functions have the same impact on the expressive power and data complexity of query languages with aggregates.  ...  In this paper we show that, even for first-order queries, the presence of aggregate operators affects the complexity and expressive power of query languages.  ... 
doi:10.1016/0304-3975(93)90221-e fatcat:27x3ed2f7baktmumyfcvxuwntq

Design and implementation of a graphical interface to XQuery

Enrico Augurusa, Daniele Braga, Alessandro Campi, Stefano Ceri
2003 Proceedings of the 2003 ACM symposium on Applied computing - SAC '03  
XQBE covers a significant subset of XQuery and is supported by a prototype enabling the formulation of queries on a graphical interface and their translation into XQuery, thus providing non-trivial querying  ...  Although designed to be easily understood by humans, XQuery, the XML standard query language, has the typical syntax of programming languages, which most users dislike.  ...  Acknowledgements In this work, Daniele Braga and Alessandro Campi are supported by the "Virtual Campus" Microsoft Research Grant.  ... 
doi:10.1145/952756.952759 fatcat:iqplejyf3nad3c6yb5s5glo6fm

Design and implementation of a graphical interface to XQuery

Enrico Augurusa, Daniele Braga, Alessandro Campi, Stefano Ceri
2003 Proceedings of the 2003 ACM symposium on Applied computing - SAC '03  
XQBE covers a significant subset of XQuery and is supported by a prototype enabling the formulation of queries on a graphical interface and their translation into XQuery, thus providing non-trivial querying  ...  Although designed to be easily understood by humans, XQuery, the XML standard query language, has the typical syntax of programming languages, which most users dislike.  ...  Acknowledgements In this work, Daniele Braga and Alessandro Campi are supported by the "Virtual Campus" Microsoft Research Grant.  ... 
doi:10.1145/952532.952759 dblp:conf/sac/AugurusaBCC03 fatcat:7jycz67mf5dzddy6c6mwqck3ae

Low complexity aggregation in graphlog and Datalog [chapter]

Mariano P. Consens, Alberto O. Mendelzon
1990 Lecture Notes in Computer Science  
In the case where no rules are recursive, the language is exactly as expressive as Klug's rst order language with aggregates.  ...  We show how Datalog can be extended to compute a large class of queries with aggregates without incurring the large expense of a language with general set manipulation capabilities.  ...  Acknowledgments We are indebted to Isabel Cruz for fruitful discussions and Steve Cook for his help with the ner points of parallel complexity theory.  ... 
doi:10.1007/3-540-53507-1_90 fatcat:2g6qdn6z6zdvzaenawkarx5rtq

A Graphical XQuery Language Using Nested Windows [chapter]

Zheng Qin, Benjamin Bin Yao, Yingbin Liu, Michael McCool
2004 Lecture Notes in Computer Science  
This graphical language provides a powerful and user-friendly environment for non-technical users to perform queries.  ...  A graphical XQuery-based language using nested windows, GXQL, is presented. Definitions of both syntax and semantics are provided.  ...  However, the use of query languages can sometimes be difficult for users not having much database training. A graphical query language can potentially be very helpful.  ... 
doi:10.1007/978-3-540-30480-7_70 fatcat:zg7vk6uvrjexnmjygnugffel44

Towards a Unified Query-by-Example (UQBE): UML as a Basis for a Generic Graphical Query Language [chapter]

Miguel A. Sicilia Urbán, Elena García Barriocanal, Juan M. Dodero Beardo
2001 Lecture Notes in Computer Science  
The overall layout of the query language is described, illustrating its potential expressive power via ODMG OQL comparisons.  ...  A generic graphical query language for ODMG-compliant object databases is proposed, based on the ideas of Query-By-Example, and using UML-like diagrams as schema notation.  ...  QBE is a complete domain calculus language [3] and its expressive power is proved to be equivalent to that of SQL [4] .  ... 
doi:10.1007/3-540-44677-x_13 fatcat:eajhvbsxenhxfbtgnxbsrnbqmy

A Visual Query Language for Complex-Value Databases [article]

Christoph Koch
2006 arXiv   pre-print
Thus, its expressive power is precisely that of the language that is usually considered to play the role of relational algebra for complex-value databases.  ...  In this paper, a visual language, VCP, for queries on complex-value databases is proposed.  ...  No study of the expressive power of these languages is available, but the queries seem to correspond to the nested (XML) analogs of restricted classes of conjunctive queries.  ... 
arXiv:cs/0602006v1 fatcat:3jt56b5z4vbcfcfsxde2y65wda

Translate Graphical XML Query Language to SQLX [chapter]

Wei Ni, Tok Wang Ling
2005 Lecture Notes in Computer Science  
Due to the complexity of XQuery, graphical XML query languages have been developed to help users query XML data.  ...  Based on ORA-SS, we developed a graphical XML query language GLASS that not only expresses the query constraints and reconstruction structure in XML view but also the relational semantic in the XML view  ...  stronger expressive power than other graphical XML query languages.  ... 
doi:10.1007/11408079_83 fatcat:ejs2e5dbjncf5ov4glpd6s7nuy
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