Gral: An Extensible Relational Database System for Geometric Applications

: We describe the architecture of a relational databasesystem that is extensible by user-defined data types and operations, including relation operations. The central concept is to use languages based on many-sorted algebra to represent queries as well as query execution plans. This leads to a simple and clean extensible system architecture, eases the task of an application developer by providing a uniform framework, and also simplifies rule-based optimization. As a case study the extensions needed for a geometric database system are considered.

• Type: Conference
• Year: 1989
• Where: VLDB
• Authors: Ralf Hartmut Güting
• Keywords: Database, Query Execution Plans, Relation Operations, User-defined Data Types, VLDB 1989