Indeed: An active database for concurrent engineering
Mattox, David D.
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https://hdl.handle.net/2142/21735
Description
Title
Indeed: An active database for concurrent engineering
Author(s)
Mattox, David D.
Issue Date
1995
Doctoral Committee Chair(s)
Lu, Stephen C-Y
Department of Study
Computer Science
Discipline
Computer Science
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mechanical
Artificial Intelligence
Computer Science
Language
eng
Abstract
Concurrent engineering is a methodology for design which is increasing in popularity at large manufacturing organizations. Because of this methodology's focus on group rather than individual productivity, many computer-based tools do not provide adequate support. This thesis describes a model for an active, object-oriented database which has been designed to support engineers involved in a joint design effort. This database provides the means to represent and manage information that has traditionally not been within the scope of computerized design tools. Users can represent the heuristics and relationships present in the design as well as the design objects. As well, the model allows for the retention of historical information which can show how values in the database were derived.
To facilitate the effective communication of this information this thesis also describes a new methodologies for accessing and sharing information. A new transaction management system is described which takes advantage of the dependency information recorded in the database. This transaction model uses optimistic locking to allow concurrent access to data by all users but minimizes the effects of conflicts when they occur. Also, a new workspace model is defined which breaks down the rigid boundaries between workspaces and allows users to selectively share information.
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