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The OLAP-XML Federation System

Xuepeng Yin, Torben Bach Pedersen
2006 International Conference on Management of Data  
This demo shows the uses of XML data for selection and grouping and explains the query optimization and evaluation processes with a concrete example.  ...  We present the logical "OLAP-XML Federation System" that enables the external data available in XML format to be used as virtual dimensions.  ...  Acknowledgements This work was supported by the Danish Research Council for Technology and Production Sciences under grant no. 26-02-0277.  ... 
dblp:conf/comad/YinP06a fatcat:a5sp3ggzzbhc5fizdczdva7umi

Generating SQL/XML query and update statements

Matthias Nicola, Tim Kiefer
2009 Proceeding of the 18th ACM conference on Information and knowledge management - CIKM '09  
The input is either a GUI or a regular SQL statement that uses logical data item names irrespective of their actual location in relational or XML columns in the database.  ...  Another problem is that the tree structure of the XML data may be unknown or difficult to understand for the user.  ...  This separation from the main mapping table allows us to handle XML data where multiple different namespaces occur in a single path, as for the logical data item country.  ... 
doi:10.1145/1645953.1646104 dblp:conf/cikm/NicolaK09 fatcat:oevihnqlozfszbnc5kgqjldmcm

A Logical, Transparent Model for Querying Linked XML Documents

Wolfgang May, Dimitrio Malheiro
2003 Datenbanksysteme für Business, Technologie und Web  
., SQL and relational data, the situation of having links inside the data is new. We define a logical, transparent data model for linked documents.  ...  We propose additional attributes using the dbxlink (database-xlink) namespace for specifying the mapping from XLinks to the logical model.  ...  The data is self-describing, i.e., each data item consists of a name and data contents (cf. the excerpt of the MONDIAL XML database [May01b] given in Figure 1 that will be used for illustrations throughout  ... 
dblp:conf/btw/MayM03 fatcat:suy3azummncjbeuxai7jl5lvce

A Decade of XML Data Management: An Industrial Experience Report from Oracle

Zhen Hua Liu, Ravi Murthy
2009 Proceedings / International Conference on Data Engineering  
and query optimisation techniques for different XML use cases.  ...  XML and its related technologies have now been in use for almost a decade.  ...  The XML schema is used for data validation whereas the query schema is used for indexing the data.  ... 
doi:10.1109/icde.2009.18 dblp:conf/icde/LiuM09 fatcat:oecsthn7q5g5bp2y3x7vbnoq5i

Algebra-Based Optimization of XML-Extended OLAP Queries

Xuepeng Yin, Torben Bach Pedersen
2006 International Conference on Management of Data  
Our solution, the "OLAP-XML Federation System," makes it possible to reference the fast changing data in XML format in OLAP queries without physical integration.  ...  In this paper, we introduce the novel query optimization techniques specialized for the federation system including a query optimizer and plan transformation rules.  ...  Acknowledgements This work was supported by the Danish Research Council for Technology and Production Sciences under grant no. 26-02-0277.  ... 
dblp:conf/comad/YinP06 fatcat:64dkcrqbfre5nj3c7nce6opapu

An RDF Query Language based on Logic Programming

Jesús M. Almendros-Jiménez
2008 Electronical Notes in Theoretical Computer Science  
We will also study how to implement it in logic programming by using logic rules for executing RDF/XQuery queries.  ...  In this paper we investigate an extension of XQuery for querying (and inferring) from RDF documents.  ...  In this proposal, logic programming can also be used for combining and querying data from heterogeneous resources in which some of them offers data in XML format and others as RDF statements.  ... 
doi:10.1016/j.entcs.2008.04.093 fatcat:u7grdkupezcmtjq4nteimoftq4

Statistics for Cost-Based XML Query Optimization

José de Aguiar Moraes Filho, Theo Härder
2006 Workshop Grundlagen von Datenbanken  
Cost-based query optimization (CBO) is a very important area for data management in general and for XML data management in particular.  ...  based on statistic information for the construction of the query execution plan.  ...  Introduction The increasing use of XML urges DB research to improve query processing on natively stored XML data.  ... 
dblp:conf/gvd/FilhoH06 fatcat:atxwmz5mbbbwfpblia24ybkare

The Statement of Conjunctive and Disjunctive Queries in Object Oriented Database with Using Fuzzy Logic

Roghayeh Madani, Ali Harounabadi
2015 International Journal of Computer Applications Technology and Research  
On the other hand for solving the problem of real world uncertain data, several methods were presented.  ...  One of these methods for modeling database is an approach wich couples object-oriented database modeling with fuzzy logic.  ...  This new metadata base organizes the data using XML format that adds more advantage to probability. Gupta et al [9] presented a method for use of fuzzy data in a traditional database.  ... 
doi:10.7753/ijcatr0407.1007 fatcat:xo5n6k5atfeq5nn6ugcougipfu

Mapping-driven XML transformation

Haifeng Jiang, Howard Ho, Lucian Popa, Wook-Shin Han
2007 Proceedings of the 16th international conference on World Wide Web - WWW '07  
We present a three-phase framework for highperformance XML-to-XML transformation based on schema mappings, and discuss methodologies and algorithms for implementing these phases.  ...  We compare our transformation framework with alternative methods such as using XQuery or SQL/XML provided by current commercial databases.  ...  WWW 2007 / Track: XML and Web Data Session: Querying and Transforming XML For example, the two corresponding SQL queries for the two logical mappings in Example 2 are as follows: q 2 : select eid, name  ... 
doi:10.1145/1242572.1242715 dblp:conf/www/JiangHPH07 fatcat:tolptkegc5ga5dirue75pwhtfa

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.  
Some XML graphical query languages for semistructured data have been proposed but they are either too complex or too limited in use.  ...  To exploit the full power of XML documents, a query language for semistructured data will be a promising and interesting application.  ...  The current standard for querying XML data is the XQuery released by W3C, which is developed based on XPath.  ... 
doi:10.1109/dasfaa.2003.1192402 dblp:conf/dasfaa/NiL03 fatcat:5oyterkbyreqtblw7k3lkvcg6a

Querying XML documents in logic programming

J. M. ALMENDROS-JIMÉNEZ, A. BECERRA-TERÓN, F. J. ENCISO-BAÑOS
2008 Theory and Practice of Logic Programming  
In addition, we will study how to query by means of theXPathlanguage against a logic program representing an XML document.  ...  In particular, we will presenthow to index XML documentsin logic programs: rules are supposed to be stored inmain memory, however facts are stored insecondary memoryby using two kind of indexes: one for  ...  Elog (Baumgartner et al. 2001) is also a logic-based XML data manipulation language, which has been used for representing Web documents by means of logic programming.  ... 
doi:10.1017/s1471068407003183 fatcat:e4jj3rzac5e2dihpfksqt3hiea

A Direct Approach to Holistic Boolean-Twig Pattern Evaluation [chapter]

Dabin Ding, Dunren Che, Wen-Chi Hou
2012 Lecture Notes in Computer Science  
Efficient query processing in XML databases is of great importance for numerous applications. Trees or twigs are the core structural elements in XML data and queries.  ...  XML has emerged as a popular formatting and exchanging language for nearly all kinds of data, including scientific data.  ...  use of all these predicates in their XML queries.  ... 
doi:10.1007/978-3-642-32600-4_25 fatcat:veevnokut5hyfms77j32wtt5h4

Storing XML Data In a Native Repository

Kamil Toman
2004 Databases, Texts, Specifications, Objects  
This paper is concerned with storing XML data in a native repository suitable for querying with modern languages such as XPath or XQuery.  ...  Some of query evaluation techniques and problems related with those methods in relation to amount of stored information are mentioned.  ...  At the same time, neither contemporary techniques used for XML data management nor languages specially developed for XML document actualization like XUpdate [13] give us enough information about possible  ... 
dblp:conf/dateso/Toman04 fatcat:klu5phvrufe3tlhsbs54qzro5q

A Logical Foundation for XML [chapter]

Mengchi Liu
2002 Lecture Notes in Computer Science  
As several rules can be used for the same query, complex queries can be expressed in XML-RL in a simple and natural way as in logic programming.  ...  First, we propose a novel data model for XML that allows us to view XML data in a way similar to complex object data models.  ...  As several rules can be used for the same query, complex queries can be expressed in XML-RL in a simple and natural way as in logic programming.  ... 
doi:10.1007/3-540-47961-9_39 fatcat:smb5itdb7fbjpevsrqkj632wre

Querying XML Documents in Logic Programming [article]

J. M. Almendros-Jiménez and A. Becerra-Terón and F. J. Enciso-Baños
2007 arXiv   pre-print
Rules and facts can be used for representing the document schema and the XML document itself.  ...  In addition, we will study how to query by means of the XPath language against a logic program representing an XML document.  ...  Elog (Baumgartner et al. 2001) is also a logic-based XML data manipulation language, which has been used for representing Web documents by means of logic programming.  ... 
arXiv:0710.4780v1 fatcat:urae2xchhrfkzpmcdomwb7jkt4
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