Rule languages and internal algebras for rule-based optimizers
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
The Evolving Role of Constraints in the Functional Data Model
Journal of Intelligent Information Systems - Special issue on functional approach to intelligent information systems
Explicit Graphs in a Functional Model for Spatial Databases
IEEE Transactions on Knowledge and Data Engineering
Investigation of Algebraic Query Optimisation Techniques for Database Programming Languages
VLDB '94 Proceedings of the 20th International Conference on Very Large Data Bases
Algebraic query optimisation for database programming languages
The VLDB Journal — The International Journal on Very Large Data Bases
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We present a functional DBPL in the style of FP that facilitates the definition of precise semantics and opens up opportunities for far-reaching optimizations. The language is integrated into a functional data model, which is extended by arbitrary type hierarchies and complex objects. Thus we are able to provide the clarity of FP-like programs together with the full power of semantic data modelling. To give an impression of the special facilities for optimizing functional database languages, we point out some laws not presented before which enable access path selection already on the algebraic level of optimization. The algebraic way of access path optimization also gives new insights into optimization strategies.