Gral: An Extensible Relational Database System for Geometric Applications
Summary: Extensible relational DB enabling user-defined data types, operators, and relation algebra. Queries and execution plans are expressed in many-sorted algebra, yielding a uniform architecture and simplified rule-based optimization; demonstrated via a geometric database extension. (summarized by gpt-5-nano on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Ralf Hartmut Güting (University of Dortmund)
BibTeX Citation
@article{guting_vldb89,
title = {{Gral: An Extensible Relational Database System for Geometric Applications}},
author = {Güting, Ralf Hartmut},
journal = {PVLDB},
series = {{VLDB} '89},
year = {1989}
}Incoming Citations (Sorted by Pagerank)
Showing 8 of 8 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 1,125 | Optimization Strategies for Spatial Query Processing | 1991 | VLDB | 0.0001208101 |
| 1,359 | GraphDB: Modeling and Querying Graphs in Databases | 1994 | VLDB | 0.00011040427 |
| 1,877 | The LSD tree: spatial access to multidimensional point and non-point objects | 1989 | VLDB | 9.5658249e-05 |
| 3,043 | The DEDALE System for Complex Spatial Queries | 1998 | SIGMOD | 7.8228924e-05 |
| 3,591 | The LyriC Language: Querying Constraint Objects | 1995 | SIGMOD | 7.279053e-05 |
| 9,152 | Second-Order Signature: A Tool for Specifying Data Models, Query Processing, and Optimization | 1993 | SIGMOD | 5.3133028e-05 |
| 13,013 | Flexible Relations - Operational Support of Variant Relational Structures | 1995 | VLDB | 5.093636e-05 |
| 13,057 | What's Special about Spatial? Database Requirements for Vehicle Navigation in Geographic Space (Extended Abstract) | 1993 | SIGMOD | 5.093636e-05 |
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Outgoing Citations (Sorted by Pagerank)
Showing 8 of 8 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 10 | Extending the Data Base Relational Model to Capture More Meaning | 1979 | SIGMOD | 0.0007727299 |
| 34 | The Design Of Postgres | 1986 | SIGMOD | 0.00049302774 |
| 119 | The EXODUS Optimizer Generator | 1987 | SIGMOD | 0.0003183602 |
| 181 | On Extending the Functions of a Relational Database System | 1982 | SIGMOD | 0.00026752689 |
| 192 | Grammar-like Functional Rules for Representing Query Optimization Alternatives | 1988 | SIGMOD | 0.00026028406 |
| 615 | A Rule-Based View of Query Optimization | 1987 | SIGMOD | 0.00015720167 |
| 684 | A Data Model and Query Language for EXODUS | 1988 | SIGMOD | 0.00014990873 |
| 1,377 | A Data Management Extension Architecture | 1987 | SIGMOD | 0.00010972063 |
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|---|---|---|---|---|
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| 2 | 181 | On Extending the Functions of a Relational Database System | 1982 | SIGMOD |
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| 6 | 1,473 | Towards a Theory of Spatial Database Queries (Extended Abstract) | 1994 | PODS |
| 7 | 13,202 | An Extended Relational Database System and It's Application to Management of Logic Diagrams | 1986 | VLDB |
| 8 | 4,745 | Graph Queries in a Next-Generation Datalog System | 2013 | VLDB |
| 9 | 1,860 | Querying Multiple Features of Groups in Relational Databases | 1996 | VLDB |
| 10 | 8,052 | Complete geometrical query languages (extended abstract) | 1997 | PODS |