A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2013; you can also visit the original URL.
The file type is application/pdf.
Filters
XML reasoning made practical
2010
2010 IEEE 26th International Conference on Data Engineering (ICDE 2010)
Preserved Fulltext
We present a tool for the static analysis of XPath queries and XML Schemas. ...
of real-world XML Schemas. ...
The problem is then formulated with logical connectives; • compilers for translating schemas and queries into their logical representations [4] ; • an optimized solver for checking satisfiability of logical ...
doi:10.1109/icde.2010.5447786
dblp:conf/icde/GenevesL10
fatcat:euz7evgi2zcbboho44ojbvwx44
Towards data abstraction in networked information retrieval systems
1999
Information Processing & Management
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2010; you can also visit the original URL.
The file type is application/pdf.
Uncertain inference allows for query processing even on incompatible database schemas. ...
Physical data independence separates search operators from access paths, thus solving text search problems related to noun phrases, compound words and proper nouns. ...
Here the queries formulated in the powerful query language of the front-end are mapped onto database-speci c formulations, which either retrieve the exact answer or a superset of it. ...
doi:10.1016/s0306-4573(99)00009-6
fatcat:5ki6pmuy3vgsni5sm5yl45bdzy
Towards a standard query model for sharing decision-support applications
1994
Proceedings. Symposium on Computer Applications in Medical Care
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
When such applications include queries to electronic patient databases, the queries must be translated to conform to local database specifications. ...
In this paper, we propose an abstract formalism, called the Standard Query Model Framework, for specifying a standard clinical data model and for supporting the automated and reliable translation of queries ...
This minimal and abstract set of modeling constructs
allows FER schemas to subsume query model
328
Query
Formulation
Figure 3. A sample FER schema. ...
pmid:7949944
pmcid:PMC2247927
fatcat:dfgjvlompvgaxjdycbqhn5ohvu
WDBQS: A Unified Access to Distant Databases Via a Simple Web-Tool
[chapter]
2000
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2005; you can also visit the original URL.
The file type is application/pdf.
This system, dedicated to casual users, proposes simple Web mechanisms to navigate through database schemas, build queries and display results. ...
This paper presents WDBQS (Web DataBase Query System); a Web-interface for querying distant Relational and Object Oriented DataBases. ...
The WDBQL querying navigator uses the Query Definition and Validation module to display the schema of the queried remote database and to help the user when query formulation. ...
doi:10.1007/3-540-44469-6_76
fatcat:neufwxnimjhrjeq3inldefbdbq
The model-assisted global query system for multiple databases in distributed enterprises
1996
ACM Transactions on Information Systems
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Conventional technologies, such as schema-based query languages and hard-coded schema integration, are not sufficient to solve this problem. ...
This article develops a new approach, a "model-assisted global query system," that utilizes an on-line repository of enterprise metadata-the Metadatabase-to facilitate global query formulation and processing ...
Formulating a Nested Query. A successfully formulated global query can be kept as a run-time view by giving a unique name, which can then be recalled to formulate a nested global query. ...
doi:10.1145/237496.237499
fatcat:7hyfkz7fbzblnmxky6scovilfe
A Quantitative Comparison of XML Schemas for Taxonomic Publications
2007
Biodiversity Informatics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
We have examined if they facilitate formulation and correct processing of queries that are common when it comes to taxonomic literature. ...
We also compare the performance of these queries on documents that are marked up with the different schemas. Finally, we propose extensions to the schemas that enhance correctness of query results. ...
All three schemas share the problem that Concept Queries cannot be formulated sufficiently exactly. ...
doi:10.17161/bi.v4i0.36
fatcat:hb4u25fkanfspn6libhlv5p764
NQS — a graphical query system for data models with binary relationship types
[chapter]
1995
Visual Database Systems 3
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Keywords Entity-Relationship data model, graphical user interface, visual query language, query graphs, schema layout algorithm S. Spaccapietra et al. (eds.), Visual Database Systems 3 ...
A graphical query system for data models with binary relationship types is described in which queries can be formulated as annotated graphs. ...
Figure 1 NQS interface with a schema diagram drawn by the embedding algorithm 3 QUERY FORMULATION Query formulation in NQS means transformation of a given schema diagram into a query graph by use of graphical ...
doi:10.1007/978-0-387-34905-3_25
fatcat:oimczznh4naurizmcsb6hknffy
A Reuse Based Object-Oriented Framework Towards Flexible Formulation of Complex Queries
[chapter]
2001
Flexible Query Answering Systems
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
them to help in the formulation of new complex queries. ...
However, query formulation remains obstinately difficult for large classes of users. ...
These, in contrast to the approach adopted here, don't allow the creation of separate and independent user views -don't filtrate the schema. ...
doi:10.1007/978-3-7908-1834-5_12
dblp:conf/fqas/SeriaiO00
fatcat:xyz3fme4fjcuhjqyezkzmczz2i
Page 313 of Mathematical Reviews Vol. , Issue 82a
[page]
1982
Mathematical Reviews
Preserved Fulltext
The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
A nonprocedural representation for queries formulated by these expressions is pro- posed. ...
“Aho and Uliman have considered the case when the proba- bility that a field is specified in a query is independent of which other fields are specified. ...
Architecture of a semantic data integration system based on a semantically complete model and a semantically complete query language
2006
Programming and computer software
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2008; you can also visit the original URL.
The file type is application/pdf.
The simplification of the users' work with the system is achieved due to some special properties of the semantically complete model (SCM) and of the semantically complete query language (SCQL), which provide ...
Using these operations, practically any query on the SCM schema can be formulated. ...
If it is required to preserve the semantics of a query independently of the context, then the query must be formulated using the association selections that refer to the associations that are included ...
doi:10.1134/s0361768806040050
fatcat:2h3v3cscinaolks3e64vbvazuq
An XML Schema-based Semantic Data Integration
2006
2006 Fifth International Conference on Grid and Cooperative Computing (GCC'06)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Such data integration raises challenging issues: (1) Support for multiple independently-managed schemas, (2) Ease of schema evolution, and (3) Simple schema mappings. ...
A simple RDF-based ontological representation scheme is used for only structural relations among independently-managed XML schemas from different institutes or domains We present the design and implementation ...
This global layer is designed to allow the user to formulate queries without understanding those multiple schemas in detail. ...
doi:10.1109/gcc.2006.28
dblp:conf/gcc/KimJSH06
fatcat:vkq3ovwovjduroti2s7axwvrn4
A DHT-based infrastructure for ad-hoc integration and querying of semantic data
2008
Proceedings of the 2008 international symposium on Database engineering & applications - IDEAS '08
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
We focus on the integration into efficient distributed query processing and evaluate our approach in a series of experiments. ...
In this paper, we argue for a unified and distributed infrastructure providing a repository for semantic data by offering location transparency and advanced query services. ...
Query Formulation This section clarifies the basic approach and highlights the tight and easy integration of schema correspondences into query formulation. ...
doi:10.1145/1451940.1451945
dblp:conf/ideas/KarnstedtSHS08
fatcat:3opr76jhdnb65edf3kpz35mrli
Reconsidering Multi-Dimensional schemas
2004
SIGMOD record
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
The primary focus is the relevancy of Multi-Dimensional logical schemas. After enumerating the advantages of such schemas, a number of caveats to the presumed advantages are identified. ...
Transforming a 3NF schema into a MD schema may actually obscure important semantic information necessary to formulate accurate queries. ...
This makes it easier to formulate queries. • The typical data warehouse query gracefully maps to the star schema. • The star schema could serve as a generic logical schema for all data warehouses. ...
doi:10.1145/974121.974136
fatcat:b44jhd6qhncvzhsvaofeyiyg3u
SUPER — Visual interaction with an object-based ER model
[chapter]
1992
Lecture Notes in Computer Science
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Visual interaction in SUPER environment is based on direct manipulation of objects and functions, providing users with maximum flexibility during schema definition as well as query formulation. ...
An example of query formulation shows the rules used to govern interactions with users. ...
SUPER fully supports unconstrained user behavior, both for schema editing and for query formulation. ...
doi:10.1007/3-540-56023-8_21
fatcat:dnekf34bs5cybps5wglbymljni
UniStore: Querying a DHT-based Universal Storage
2007
2007 IEEE 23rd International Conference on Data Engineering
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Moreover, querying schema data (attributes, correspondences) has to be supported as well. ...
The first question raises two main problems: We need a generic and flexible schema for structuring data and we have to deal with heterogeneities on schema and on data level. ...
In order to face the challenges of data organization, we follow the idea of the universal relation model allowing schema-independent query formulation. ...
doi:10.1109/icde.2007.369054
dblp:conf/icde/KarnstedtSRMHSJ07
fatcat:yx5fjbhnq5a5jhxv34xyroevue
« Previous
Showing results 1 — 15 out of 21,589 results