Object-relational query builder which determines existence of st

Details Object-relational query builder which determines existence of st Object-relational query builder which determines existence of st

1998-05-29

2000-09-12

Black, Thomas G.

Data processing: database and file management or data structures

Database design

Data structure types

707 3, 707 6, 707 10, G06F 1700

Patent

active

061191264

ABSTRACT:
One embodiment of the present invention provides a method for constructing a query for an object-relational database. This method displays at least part of a schema for the object-relational database to a user in a graphical representation. Next, the method allows the user to perform graphical manipulations on the schema. The method then generates a query based upon the schema and the graphical manipulations, and this query is sent to the object-relational database. Another embodiment of the present invention provides a method for processing an object-relational query for transmission from a client to an object-relational database server. This method receives the query at the client, and parses the query to determine which object-relational structures the query is attempting to access. The method then determines from data dictionary information, loaded from the object-relational database server and cached locally on the client, if the object-relational structures the query is attempting to access exist in the object-relational database server. If they do not exist, the method indicates an error condition. Yet another embodiment of the present invention provides a method for displaying objects defined within an object-oriented programming system that are stored in a relational table structure. This method displays a table of objects, so that a first object in the table is represented by an identifier. The method next receives a command from a user to provide a more-detailed display of the first object. In response to this command, the method retrieves attributes of the first object from a data store, and displays an expanded representation of the first object by displaying the attributes.

REFERENCES:
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Hu et al., Design and implementation of an object-relational multimedia database, ICICS, Proceedings of International Onvference, vol. 1, pp. 573-577, 1997.
Loeser et al., iWebDB-Web site administration based on object-relational database technology, IDEAS, International Symposium Proceedings p. 92-91, 1999.
More et al., Extended collective I/O for efficient retrieval of large objects, HIPC, 5th International Conference, pp. 359-366, 1998.
Wang et al., Parallel/distributed simulation with the COMPOSE object-relational database, ASSET, Proceedings, IEEE Workshop, pp. 162-165, 1997.

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