A probabilistic relational algebra for the integration of information retrieval and database systems
ACM Transactions on Information Systems (TOIS)
Flexible query answering systems
Flexible query answering systems
Supporting valid-time indeterminacy
ACM Transactions on Database Systems (TODS)
Handling infinite temporal data
PODS '90 Proceedings of the ninth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Uncertainty in a nested relational database model
Data & Knowledge Engineering
The Management of Probabilistic Data
IEEE Transactions on Knowledge and Data Engineering
Representation and Querying in Temporal Databases: the Power of Temporal Constraints
Proceedings of the Ninth International Conference on Data Engineering
Representation of Definite, Indefinite and Infinite Temporal Information
IDEAS '00 Proceedings of the 2000 International Symposium on Database Engineering & Applications
On uncertainty and data-warehouse design
ADVIS'04 Proceedings of the Third international conference on Advances in Information Systems
| Hi-index | 0.00 |
In this paper we are concerned with the problem of designing of a conceptual framework for the representation needs of conflicting but still certain data, in multi-source temporal environments. We put forward a proposal based on the assumption that conflict and uncertainty are dual properties. We believe that the querying of certain but conflicting information bases will always provide possible but not always definite answers. We start by positioning conceptual schema, database with regard to this problem as part of a three-layer architecture for capturing and representing the dual properties conflict and uncertainty. Then we distinguish lattice structures as the central task in query answering considering the conceptual, instance level always with respect to the dynamism-dimension of data.