Abstract
In order to execute database queries efficiently, they are usually translated into an algebra: a small set of operations together with some equivalences. The operations are implemented very efficiently by the database engine, and the equivalences are used to optimise the query. Since query languages for object-oriented databases are more complex than their relational counterparts, the algebra and translation, or processing framework, is more elaborate. This paper describes the processing framework for object comprehensions, a powerful object-oriented query language. Both operations and equivalences of the algebra are defined, together with a translation into it. The framework is illustrated by translating and optimising an example object comprehension query.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
