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Limits of Schema Mappings
2017
Theory of Computing Systems
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We obtain a number of results about the limits of sequences of GAV schema mappings and the limits of sequences of LAV schema mappings that reveal striking differences between these two classes of schema ...
We also consider the completion of the metric space of sets of target instances and obtain concrete representations of limits of sequences of schema mappings in terms of generalized schema mappings, that ...
of schema mappings. ...
doi:10.1007/s00224-017-9812-7
pmid:31258388
pmcid:PMC6560830
fatcat:htvha7i4czddjicye72v5c4ex4
Reverse-engineering of XML Schemas: A Survey
2010
Databases, Texts, Specifications, Objects
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Some methods for reverse-engineering of XML schemas have been proposed and in this paper, they are compared using various criteria such as used XML schema languages, level of user involvement, number of ...
They make the management of XML schemas easier as well as provide means for accomplishing integration of various XML data sources. ...
This approach supports semi-automatic mapping of multiple schemas to a model which is a PSM. It preserves no mapping between the PSM and the DTDs. It is limited to DTD only. ...
dblp:conf/dateso/KlimekN10
fatcat:nt57w67z5vbixijuzwryq7g5hy
Mapping XML instances
2005
Special interest tracks and posters of the 14th international conference on World Wide Web - WWW '05
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We present a case study of the problem that arises in an XML based project, which involves mapping of different XML schemas to each other. ...
We describe our approach to solving the problem, its advantages and limitations. ...
The parentheses around a tick mark () indicate that the mapping is handled in a limited sense. ...
doi:10.1145/1062745.1062782
dblp:conf/www/AnandW05
fatcat:ldgerijscjccvmirsfzmnzfhlm
Generating Python Code from Object-Z Specifications
2017
International Journal of Software Engineering & Applications
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There are a number of existing works that mapped Object-Z to C++ and Java programming languages. ...
as collections of objects. ...
This state schema will mapped to: @inv(lambda:balance +limit>=0) class CreditCard: balance=Z … where Z a function with a precondition to ensure if the constant is of type integer and greater than or equal ...
doi:10.5121/ijsea.2017.8401
fatcat:hcan2sjztzboncxrkkitqmcr6e
DYNAMERGE: A MERGING ALGORITHM FOR STRUCTURED DATA INTEGRATION ON THE WEB
2007
Advances in Scalable Web Information Integration and Service
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Based on a network of schemas (database schemas, ontologies) related via mappings our algorithm generates a global view over a set of resources. ...
Integration systems proposed in the last two decades as a solution start showing some limitations for various reasons. ...
While the federated approaches were adapted for the integration of a limited number of data sources in a close environment, they have started to show limitations in the open environment the web constitutes ...
doi:10.1142/9789812770240_0009
fatcat:kpdrh4dusnfmnaczwhdbviytiq
Ontology-driven mapping of temporal data in biomedical databases
2006
AMIA Annual Symposium Proceedings
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We discuss the design of Synchronus, which consists of a schema-mapping ontology and a data-mapping algorithm that together provide general capabilities for database transformation. ...
We address this problem in implementing Synchronus, a tool for ontology-driven mapping of data from an existing relational database to a database schema with a uniform temporal representation. ...
conceptual mapping of the two schemas. ...
pmid:17238664
pmcid:PMC1839378
fatcat:33qujytktffnxp4bkoitg2xaxy
A Vocabulary-Independent Generation Framework for DBpedia and Beyond
2017
International Semantic Web Conference
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The dbpedia Extraction Framework, the generation framework behind one of the Linked Open Data cloud's central hubs, has limitations which lead to quality issues with the dbpedia dataset. ...
This way, among others, interchanging different schema annotations is supported, instead of being coupled to a certain ontology as it is now, because the dbpedia Extraction Framework allows only generating ...
the schema of the resulting data. ...
dblp:conf/semweb/MeesterDMKVLMH17
fatcat:hrze7ckjwngarjrw4ys77xp5ey
SPIDER: a Schema mapPIng DEbuggeR
2006
Very Large Data Bases Conference
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At the heart of SPIDER is a data-driven facility for understanding a schema mapping through the display of routes. ...
A schema mapping is a high-level declarative specification of how data structured under one schema, called the source schema, is to be transformed into data structured under a possibly different schema ...
Our schema mapping example We use the nested relational model and mapping language of [6] for describing our schema mapping (see Figure 1 ). ...
dblp:conf/vldb/AlexeCT06
fatcat:eswlw7e7vrgubpvuayslyuetu4
Integrated Data Mapping for a Software Meta-tool
2009
2009 Australian Software Engineering Conference
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We describe Marama Torua, a tool supporting high-level specification and implementation of complex data mappings. ...
MaramaTorua is a set of Eclipse plug-ins allowing close integration with other tools such as schema browsers, and with the Marama meta-tool itself. ...
Our experience is that semi-automated mapping agents can greatly assist translator authors but must be limited to subsets of schema and coupled with good schema and mapping visualization support [5] . ...
doi:10.1109/aswec.2009.21
dblp:conf/aswec/HuhGHLA09
fatcat:vv6dfuqzvzd2zgyikmc4fektfa
Declarative Data Transformations for Linked Data Generation: The Case of DBpedia
[chapter]
2017
Lecture Notes in Computer Science
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We employ an alignment of data transformations described using the Function Ontology (fno) and mapping of data to Linked Data described using the rdf Mapping Language (rml). ...
Since complex data transformations remain out of scope for mapping languages, these steps are often implemented as custom solutions, or with systems separate from the mapping process. ...
Our resulting extension of the rmlprocessor overcomes the limitations as stated in Section 3. It is capable of combining schema and data transformations. ...
doi:10.1007/978-3-319-58451-5_3
fatcat:aielaatqyzdxppirfkxm5s7bme
Dimensions of Dataspaces
[chapter]
2009
Lecture Notes in Computer Science
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The vision of dataspaces has been articulated as providing various of the benefits of classical data integration, but with reduced upfront costs, combined with opportunities for incremental refinement, ...
With a view to clarifying the key concepts in the area, encouraging the use of consistent terminology, and enabling systematic comparison of proposals, this paper defines a collection of dimensions that ...
Providing this illusion typically involves the development of a single central schema to which the schemas of individual resources are related using some form of mapping. ...
doi:10.1007/978-3-642-02843-4_8
fatcat:lyz5ks3anzh73e5vn5c6dhgaba
Ontology-Based Data Access Mapping Generation Using Data, Schema, Query, and Mapping Knowledge
[chapter]
2017
Lecture Notes in Computer Science
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While a number of these tools use knowledge from the original data, existing Linked Data, schemas, and/or mappings, they still fall short when dealing with complex challenges and the user effort can be ...
In this paper, we propose an approach, together with an evaluation, that discovers and uses extended knowledge from existing (Linked) Data, schemas, query workload, and mappings, and combines it with knowledge ...
The use of mapping process knowledge in the tools is limited to either the original data, schema and/or ontology, while the query workload is neglected. ...
doi:10.1007/978-3-319-58451-5_15
fatcat:jbnzkvj7xffxfoyijtd34dsyde
Supporting Geosciences Web Services Metadata Management and Discovery
2010
2010 IEEE International Conference on Services Computing
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The problem with most of these systems is that their query performance is limited by the use of fixed schema mapping strategies. ...
This project uses SPARQL, the W3C standard for querying RDF, to support discovery of web services. ...
The data loading and query performance of existing systems is limited due to fixed database schemas. ...
doi:10.1109/scc.2010.27
dblp:conf/IEEEscc/BrazierCGKP10
fatcat:zgjxrujdwjgx3npi3yvuv3mnhm
Demonstration of a Multiresolution Schema Mapping System
[article]
2018
arXiv
pre-print
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The end user is not limited to providing high-resolution constraints like exact data records but may also provide constraints of various resolutions, like incomplete data records, value ranges, and data ...
Sample-driven schema mapping allows the user to describe the schema mapping using data records. ...
Our Approach -To address the above limitations of sample-driven schema mapping, we developed Prism 1 , a multiresolution schema mapping system, that can discover schema mapping queries employing user insights ...
arXiv:1812.07658v1
fatcat:72rfptm2jbccfotc2dlkeclj4a
Semantic Annotation of XML-Schema for Document Transformations
[chapter]
2010
Lecture Notes in Computer Science
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Creates structural dependencies between schema and ontology.
SAWSDL Discussion • Lifting and lowering mappings cannot be used to annotate a schema in a declarative way. ...
elements but are limited in their expressiveness. ...
doi:10.1007/978-3-642-16961-8_39
fatcat:ahkikawiefg4llaf6ecxjgjb2u
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