An algebraic formulation of the aggregative closure query

An Object-Oriented Query Model: An Algebraic Approach With Closure

An object algebra is presented as a formal query model for object-oriented databases. The algebra serves not only to access and manipulate the structure and behavior of objects, but also supports the creation of new objects and the introduction of new relationships into the schema. It provides a more powerful and flexible tool than do messages for effectively dealing with complex situations and...

Webspace query formulation: an overview

To find information on the World-Wide Web (WWW), two approaches are generally followed. Browsing the web from a specific starting point, or web-site map, is called search by divergence. The second approach, search by convergence, is followed when using a search engine. Most search engines use a information retrieval strategy, which requires that the user supplies some keywords to find the relev...

Algebraic Closure

Query Formulation as an Information Retrieval Problem

Query formulation in the context of large conceptual schemata is known to be a hard problem. When formulating ad-hoc queries users may become overwhelmed by the vast amount of information that is stored in the information system; leading to a feeling of lost in conceptual space. In this article we develop a strategy to cope with this problem. This strategy is based on ideas from the information...

An Algebraic Compression Framework for Query Results

1 This work on the Cornell Jaguar project was funded in part through an IBM Faculty Development award and a Microsoft research grant to Praveen Seshadri, through a contract with Rome Air Force Labs (F30602-98-C-0266) and through a grant from the National Science Foundation (IIS-9812020). Abstract Decision-support applications in emerging environments require that SQL query results or intermedia...