The data warehouse toolkit: practical techniques for building dimensional data warehouses
The data warehouse toolkit: practical techniques for building dimensional data warehouses
A dimensional modeling manifesto
DBMS - Special issue on data warehousing
WWW '99 Proceedings of the eighth international conference on World Wide Web
DTD inference for views of XML data
PODS '00 Proceedings of the nineteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Extending OLAP querying to external object databases
Proceedings of the ninth international conference on Information and knowledge management
A Web Odyssey: from Codd to XML
PODS '01 Proceedings of the twentieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
On XML integrity constraints in the presence of DTDs
PODS '01 Proceedings of the twentieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
What can Hierarchies do for Data Warehouses?
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
IDEAS '00 Proceedings of the 2000 International Symposium on Database Engineering & Applications
A Web-Oriented Approach to Manage Multidimensional Models through XML Schemas and XSLT
EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
Integrating heterogeneous data warehouses using XML technologies
Journal of Information Science
Finding an application-appropriate model for XML data warehouses
Information Systems
XML-OLAP: a multidimensional analysis framework for XML warehouses
DaWaK'05 Proceedings of the 7th international conference on Data Warehousing and Knowledge Discovery
X-warehousing: an XML-based approach for warehousing complex data
ADBIS'06 Proceedings of the 10th East European conference on Advances in Databases and Information Systems
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We suppose collections of XML data described by Document Type Definitions (DTDs). This data has been generated by applications and plays a role of OLTP database(s). A star schema, a well-known technique used in data warehousing, can be applied. Then dimension information is supposed to be contained in XML data. We will use the notions of subDTD and view, and formulate referential integrity constraints in XML environment. We use simple pattern matching capabilities of current XML query languages for XML view specification and tree embedding algorithms for these purposes. A dimension hierarchy is defined as a set of logically connected collections of XML data. Facts may be also conceived as elements of an XML document. Due to the structural complexity of XML data the approach requires subtler formal model than it is done with conventional dimension and fact tables described by classical star schemes. In consequence, our approach captures more from heterogeneity of source databases than it is done in classical relational approaches to data warehousing.