QBE-like Queries and Multimedia Extensions in a Nested Relational DBMS (1995)
| Venue: | DBMS, Proc. Int. Conf. on Visual Information Systems |
| Citations: | 14 - 6 self |
BibTeX
@INPROCEEDINGS{Wegner95qbe-likequeries,
author = {Lutz Wegner and Sven Thelemann and Stephan Wilke and Rob Lievaart},
title = {QBE-like Queries and Multimedia Extensions in a Nested Relational DBMS},
booktitle = {DBMS, Proc. Int. Conf. on Visual Information Systems},
year = {1995},
pages = {437--446}
}
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Abstract
: We introduce ESCHER, a prototype database system based on the extended non-first-normal-form data model. The nested table approach is the paradigm for the graphical interface which allows browsing, editing and querying the database. Interaction is achieved by fingers generalizing the well-known cursor concept. We focus on interactive query formulation for nested tables in a QBE-like fashion which is suitable for ad-hoc queries by casual users. The paper closes with examples of nontextual data types which are seamlessly integrated into the data model and the interface. 1 Introduction ESCHER is a prototype database system supporting non-standard applications in engineering, science, tourism, and the entertainment industry. ESCHER originated in 1987 as part of a joint research project with IBM Scientific Center Heidelberg and became operational in 1989 as a database editor [10, 16, 17, 18]. The underlying data model is an extension of the classical NF 2 (non first normal form) data ...
