Building the data warehouse (2nd ed.)
Building the data warehouse (2nd ed.)
Advanced database systems
A product perspective on total data quality management
Communications of the ACM
Enhancing data quality in data warehouse environments
Communications of the ACM
Improving data warehouse and business information quality: methods for reducing costs and increasing profits
Comparison of access methods for time-evolving data
ACM Computing Surveys (CSUR)
Maintaining data warehouses over changing information sources
Communications of the ACM
Data warehousing: using the Wal-Mart model
Data warehousing: using the Wal-Mart model
IEEE Transactions on Knowledge and Data Engineering
Efficiently Supporting Temporal Granularities
IEEE Transactions on Knowledge and Data Engineering
Temporal View Self-Maintenance
EDBT '00 Proceedings of the 7th International Conference on Extending Database Technology: Advances in Database Technology
Point-Versus Interval-Based Temporal Data Models
ICDE '98 Proceedings of the Fourteenth International Conference on Data Engineering
On Making Data Warehouses Active
DaWaK 2000 Proceedings of the Second International Conference on Data Warehousing and Knowledge Discovery
Effective timestamping in databases
The VLDB Journal — The International Journal on Very Large Data Bases
Towards an Accommodation of Delay in Temporal Active Databases
ADC '00 Proceedings of the Australasian Database Conference
Austrian Online Archive Processing: Analyzing Archives of the World Wide Web
ECDL '02 Proceedings of the 6th European Conference on Research and Advanced Technology for Digital Libraries
Maintaining internal consistency of report for real-time OLAP with layer-based view
APWeb'11 Proceedings of the 13th Asia-Pacific web conference on Web technologies and applications
Event-feeded dimension solution
DaWaK'05 Proceedings of the 7th international conference on Data Warehousing and Knowledge Discovery
Exploitation of referential integrity constraints for efficient update of data warehouse views
BNCOD'05 Proceedings of the 22nd British National conference on Databases: enterprise, Skills and Innovation
Efficient update of data warehouse views with generalised referential integrity differential files
BNCOD'06 Proceedings of the 23rd British National Conference on Databases, conference on Flexible and Efficient Information Handling
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Real-world changes are generally discovered delayed by computer systems. The typical update patterns for traditional data warehouses on an overnight or even weekly basis enlarge this propagation delay until the information is available to knowledge workers. Typically, traditional data warehouses focus on summarized data (at some level) rather than detail data. For active data warehouse environments, also detailed data about individual entities are required for checking the data conditions and triggering actions. Hence, keeping data current and consistent in that context is not an easy task. In this paper we present an approach for modeling conceptual time consistency problems and introduce a data model that deals with timely delays. It supports knowledge workers, to find out, why (or why not) an active system responded to a certain state of the data. Therefore the model enables analytical processing of detail data (enhanced by valid time) based on a knowledge state at a specified instant of time. All states that were not yet knowable to the system at that point in time are consistently ignored.