Second-order signature: a tool for specifying data models, query processing, and optimization
SIGMOD '93 Proceedings of the 1993 ACM SIGMOD international conference on Management of data
Plug and Play with Query Algebras: SECONDO-A Generic DBMS Development Environment
IDEAS '00 Proceedings of the 2000 International Symposium on Database Engineering & Applications
STEPQ: spatio-temporal engine for complex pattern queries
SSTD'13 Proceedings of the 13th international conference on Advances in Spatial and Temporal Databases
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This paper describes a data model for fuzzy spatial objects implemented as an algebra module in SECONDO. Furthermore, the graphical representation of such objects is discussed.