The temporal query language TQuel
ACM Transactions on Database Systems (TODS)
Adding time dimension to relational model and extending relational algebra
Information Systems
A homogeneous relational model and query languages for temporal databases
ACM Transactions on Database Systems (TODS)
A generalized model for a relational temporal database
SIGMOD '88 Proceedings of the 1988 ACM SIGMOD international conference on Management of data
A foundation of CODD's relational maybe-operations
ACM Transactions on Database Systems (TODS)
An Efficient Pictorial Database System for PSQL
IEEE Transactions on Software Engineering
Geo-Relational Algebra: A Model and Query Language for Geometric Database Systems
EDBT '88 Proceedings of the International Conference on Extending Database Technology: Advances in Database Technology
Incomplete Information in Relational Temporal Databases
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
Entity Modeling in the MLS Relational Model
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
A Multi-Resolution Relational Data Model
VLDB '92 Proceedings of the 18th International Conference on Very Large Data Bases
General research issues in multimedia database systems
ACM Computing Surveys (CSUR)
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Our model, algebra and SQL-like query language for temporal databases extend naturally to parametric data, of which spatial, temporal, spatio-temporal, belief and ordinary data are special cases.