Using continued fractions for efficient subclass checking
ACM SIGPLAN OOPS Messenger
Hybrid applications over XML: integrating the procedural and declarative approaches
Proceedings of the 4th international workshop on Web information and data management
On type systems for object-oriented database programming languages
ACM Computing Surveys (CSUR)
Orthogonally persistent object systems
The VLDB Journal — The International Journal on Very Large Data Bases - Persistent object systems
Fibonacci: a programming language for object databases
The VLDB Journal — The International Journal on Very Large Data Bases - Persistent object systems
Type-safe relaxing of schema consistency rules for flexible modelling in OODBMS
The VLDB Journal — The International Journal on Very Large Data Bases
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Our focus of interest is in the integration of programming languages and database management systems. In particular, the integration of type systems and data models is considered. One tension in this integration occurs when a type system with subtype inheritance is combined with a data model which contains mutable values.A description of some well-known problems in such systems is given. This is followed by a classification of possible trade-offs between the safety of static checking, normally required by type systems, and the flexibility of dynamic checking, normally found in data models. At each stage in the classification decreasing static safety is traded for an increasing class of correct programs which may be written. The purpose of this classification is to allow a DBPL designer to understand the implications of any particular type system with both subtyping and mutable values.