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Natural language query filtration in the Conceptual Query Language
Proceedings of the Thirtieth Hawaii International Conference on System Sciences, 2002Natural language (NL) interfaces for database query formulation have always been recognized as a much needed enhancement for end-users. Poor performances with earlier NL systems had led to a lull in research in this field. However, latter-day experiments and systems appear to be sufficiently more promising to warrant continued and further research in ...
V. Owei, null Hyeun-Suk Rhee, S. Navathe
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Information Sciences, 1991
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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An object query language for fuzzy querying
Database and Expert Systems Applications. 8th International Conference, DEXA '97. Proceedings, 2002Fuzzy querying systems allow queries to be more or less satisfied. Then, the results of a query are ranked according to their degree of satisfaction. The need for fuzzy querying systems has increased since the arrival of multimedia data in the field of database management systems.
F. Connan, D. Rocacher
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On the structure of queries in constraint query languages
Proceedings 11th Annual IEEE Symposium on Logic in Computer Science, 2002We study the structure of first-order and second-order queries over constraint databases. Constraint databases are formally modeled as finite relational structures embedded in some fixed infinite structure. We concentrate on problems of elimination of constraints, reducing quantification range to the active domain of the database and obtaining new ...
M. Benedikt, L. Libkin
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The t4sql temporal query language
Proceedings of the sixteenth ACM conference on Conference on information and knowledge management, 2007Time characterizes every aspect of our life and its management when storing and querying data is very important. In this paper we propose a new temporal query language, called T4SQL, supporting multiple temporal dimensions of data. Besides the well-known valid and transaction times, it encompasses two additional temporal dimensions, namely ...
COMBI, CARLO +2 more
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A multimedia query specification language
Proceedings. International Workshop on Multi-Media Database Management Systems, 1996Typically, multimedia applications involve thousands of hours of video, images, audio, text and graphics that need to be stored, retrieved and manipulated in a large multimedia database. There is therefore an important need for novel techniques and systems which provide an efficient retrieval facility of the voluminous information stored in the ...
Nael B. Hirzalla, Ahmed Karmouch
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Computational Power in Query Languages
SIAM Journal on Computing, 1982Primitive recursion, recursion and partial recursion are defined for languages which query a relational data base. Necessary and sufficient conditions for a language to satisfy these properties are given. The computational power of several extensions of the relational algebra is considered.
Davis, Henry W., Winslow, Leon E.
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The Metaphor GIS Query Language
Journal of Visual Languages & Computing, 2000In recent years, visual representations have been increasingly used in the management of real-world phenomena as a valuable support for human?computer interaction. In the field of Geographic Information Systems, visual languages represent a promising means for allowing unskilled users to query geographic databases.
SEBILLO, Monica Maria Lucia +2 more
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1969
The query language reflects all of the system functional requirements discussed in the preceding chapter, because it is the interface between the user of the file system and the automated search and storage components of the system. Hence, all of the design capabilities that are built into the file system by virtue of its structure must be made ...
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The query language reflects all of the system functional requirements discussed in the preceding chapter, because it is the interface between the user of the file system and the automated search and storage components of the system. Hence, all of the design capabilities that are built into the file system by virtue of its structure must be made ...
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Ontology: Querying Languages and Development
2019Ontologies are a key support to provide a shared understanding of knowledge domains. Their flexibility and usefulness is witnessed in a variety of scenarios, from knowledge-based retrieval to projects like the Semantic Web. The possibility to express semantic information gave birth to a new class of query languages specifically designed.
Fionda, Valeria, Pirrò€, Giuseppe
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