The user´s view level of the GOQL graphical query language

Author

Keramopoulos, Euclid ; Pouyioutas, Philippos ; Ptohos, Tasos

Author_Institution

Sch. of Inf. & MT, Univ. of North London, UK

fYear

1999

fDate

1999

Firstpage

81

Lastpage

86

Abstract

The paper addresses issues related to the design of a graphical query mechanism that can act as an interface to any object-oriented database system (OODBS), in general, and the object model of ODMG 2.0, in particular. In the paper a brief literature survey of related work is given, and an analysis methodology that allows the evaluation of such languages is proposed. Moreover, the user´s view level of a new graphical query language, namely GOQL (Graphical Object Query Language), for ODMG 2.0 is presented. The user´s view level provides a graphical schema that does not contain any of the perplexing details of an object-oriented database schema, and it also provides a foundation for a graphical interface that can support ad-hoc queries for object-oriented database applications. We illustrate, using an example, the user´s view level of GOQL

Keywords

graphical user interfaces; object-oriented databases; query languages; visual languages; GOQL graphical query language; Graphical Object Query Language; ODMG 2.0; ad-hoc queries; graphical interface; graphical schema; object model; object-oriented database system interface; user´s view level; Computer languages; Data structures; Database languages; Database systems; Electrical capacitance tomography; Electronic switching systems; Informatics; Object oriented databases; Object oriented modeling; Spatial databases;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Visualization, 1999. Proceedings. 1999 IEEE International Conference on

Conference_Location

London

ISSN

1093-9547

Print_ISBN

0-7695-0210-5

Type

conf

DOI

10.1109/IV.1999.781540

Filename

781540