The Object-Oriented Functional Data Language
IEEE Transactions on Software Engineering
Automatic generation and use of abstract structure operators
ACM Transactions on Programming Languages and Systems (TOPLAS)
SIGMOD '91 Proceedings of the 1991 ACM SIGMOD international conference on Management of data
Aspects: extending objects to support multiple, independent roles
SIGMOD '91 Proceedings of the 1991 ACM SIGMOD international conference on Management of data
ACM SIGPLAN OOPS Messenger
A general framework for the optimization of object-oriented queries
SIGMOD '92 Proceedings of the 1992 ACM SIGMOD international conference on Management of data
Containment and minimization of positive conjunctive queries in OODB's
PODS '92 Proceedings of the eleventh ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
ACM SIGPLAN OOPS Messenger
Query evaluation techniques for large databases
ACM Computing Surveys (CSUR)
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
Proceedings of the 30th IEEE symposium on Foundations of computer science
An equational object-oriented data model and its data-parallel query language
Proceedings of the 11th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Orthogonal optimization of subqueries and aggregation
SIGMOD '01 Proceedings of the 2001 ACM SIGMOD international conference on Management of data
Object-Oriented Query Languages: The Notion and the Issues
IEEE Transactions on Knowledge and Data Engineering
On Modeling Cost Functions for Object-Oriented Databases
IEEE Transactions on Knowledge and Data Engineering
View Operations on Objects with Roles for a Statically Typed Database Language
IEEE Transactions on Knowledge and Data Engineering
Efficient Queries over Web Views
IEEE Transactions on Knowledge and Data Engineering
An Equational Chase for Path-Conjunctive Queries, Constraints, and Views
ICDT '99 Proceedings of the 7th International Conference on Database Theory
Investigation of Algebraic Query Optimisation Techniques for Database Programming Languages
VLDB '94 Proceedings of the 20th International Conference on Very Large Data Bases
Physical Data Independence, Constraints, and Optimization with Universal Plans
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
A logical view of structured files
The VLDB Journal — The International Journal on Very Large Data Bases
Algebraic query optimisation for database programming languages
The VLDB Journal — The International Journal on Very Large Data Bases
Towards algebraic query optimisation for XQuery
Journal on Data Semantics VII
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We define a query algebra for object-oriented databases that fully supports abstract data types and object identity while providing associative access to objects, including a join capability that respects the discipline of data abstraction. The structure of the algebra and the abstract access to objects offer opportunities for query optimization.The algebraic operations take an abstract view of objects and access typed collections of objects only through the public interface defined for the type. The algebra supports access to relationships implied by the structure of the objects, ai well as the definition and creation of new relationships between objects. We introduce two notions of object equality to support the creation of new objects by the algebraic operations.