POPL '96 Proceedings of the 23rd ACM SIGPLAN-SIGACT symposium on Principles of programming languages
ACM Computing Surveys (CSUR)
Domain specific embedded compilers
Proceedings of the 2nd conference on Domain-specific languages
Journal of the ACM (JACM)
Distributed Programming in a Multi-Paradigm Declarative Language
PPDP '99 Proceedings of the International Conference PPDP'99 on Principles and Practice of Declarative Programming
A functional logic database library
Proceedings of the 2005 ACM SIGPLAN workshop on Curry and functional logic programming
Type-oriented construction of web user interfaces
Proceedings of the 8th ACM SIGPLAN international conference on Principles and practice of declarative programming
Declarative programming with function patterns
LOPSTR'05 Proceedings of the 15th international conference on Logic Based Program Synthesis and Transformation
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Programmers need mechanisms to store application specific data that persists multiple program runs. To accomplish this task, they usually have to deal with storage specific code to access files or relational databases. Functional logic programming provides a natural framework to transparent persistent storage through persistent predicates, i.e., predicates with externally stored facts. We extend previous work on persistent predicates for Curry by lazy database access. Results of a database query are only read as much as they are demanded by the application program. We also present a type-oriented approach to convert between database and Curry values which is used to implement lazy access to persistent predicates based on a low level lazy database interface.