Computer-aided design syst,ems have become a big business. Advances in technology have made it commercially feasible to place a powerful engineering workstation on every designer's desk. A major selling point for these workstations is the computer aided design software they provide, rather than the actual hardware. The trade magazines are full of advertisements promising full menu design systems, complete with an integrated database (preferably "relational"). What does it all mean? This book focuses on the critical issues of managing the information about a large design project. While undeniably one of the most important areas of CAD, it is also one of the least understood. Merely glueing a database system to a set of existing tools is not a solution. Several additional system components must be built to create a true design management system. These are described in this book. The book has been written from the viewpoint of how and when to apply database technology to the problems encountered by builders of computer-aided design systems. Design systems provide an excellent environment for discovering how far we can generalize the existing database concepts for non-commercial applications. This has emerged as a major new challenge for database system research. We have attem pted to avoid a "database egocentric" view by pointing out where existing database technology is inappropriate for design systems, at least given the current state of the database art. Acknowledgements.
Reihe
Auflage
Sprache
Verlagsort
Verlagsgruppe
Zielgruppe
Editions-Typ
Illustrationen
Gewicht
ISBN-13
978-3-540-15130-2 (9783540151302)
DOI
10.1007/978-3-642-82438-8
Schweitzer Klassifikation
1 Computer-Aided Design Tools and Systems.- 1.1 What is Design?.- 1.2 What is Computer-Aided Design?.- 1.3 Computer-Aided Design Tools.- 1.3.1 Synthesis Tools.- 1.3.2 Analysis Tools.- 1.3.3 Information Management Tools.- 1.4 The Design of Complex Artifacts.- 1.5 Failure of Current CAD Systems.- 1.6 Structure of the Book.- 2 Survey of Engineering Design Applications.- 2.1 Introduction.- 2.2 Basic Terms.- 2.3 Kinds of Engineering Design Applications.- 2.3.1 VLSI Design Environment.- 2.3.1.1 Multidisciplinary Design: Architecture, Logic, Layout.- 2.3.1.2 Design Methodologies: Hierarchical Approach.- 2.3.1.3 The Computing Environment for Design: Dispersed Computation.- 2.3.2 Software Engineering Environment.- 2.3.2.1 Multiple Representations: Source, Object, Runable Code.- 2.3.2.2 Design Methodology: Modular Programming.- 2.3.2.3 Configurations and Engineering Changes.- 2.3.3 Architectural/Building Design Environment.- 2.3.3.1 Pipe Design System: Sequential Execution of Applications Programs.- 2.3.3.2 Multidisciplinary Design: Piping and Structures.- 2.4 Requirements for Engineering Data Management.- 2.5 Why Commercial Databases are NOT like Design Databases.- 2.6 Previous Approaches for Design Data Management.- 3 Design Data Structure.- 3.1 Example: The Representation Types of a VLSI Circuit Design.- 3.2 Design Data Models.- 3.2.1 Relations (The VDD System).- 3.2.2 A Design Data Manager (SQUID).- 3.2.3 Complex Objects (System-R).- 3.2.4 Abstract Data Types (Stonebraker).- 3.2.5 Semantic Data Model (McLeod's Event Model).- 3.3 Summary.- 4 The Object Model.- 4.1 Introduction.- 4.2 What are Design Objects?.- 4.3 Interfaces: How to Use a Cell Without the Details?.- 4.4 Composition and Interface.- 4.5 Complete Example of Object Specification.- 4.6 Objects Implemented as Structured Files.- 5 Design Transaction Management.- 5.1 Introduction.- 5.2 Design Computing Environment: Implications for Data Management.- 5.3 Conventional Transactions in the Design Environment.- 5.4 Concurrency Control Issues.- 5.5 Recovery Issues.- 5.6 Design Transaction Model.- 5.7 Extensions to the Transaction Model.- 5.8 Related Work.- 6 Design Management System Architecture.- 6.1 Introduction.- 6.2 System Architecture.- 6.2.1 Storage Component.- 6.2.2 Object System.- 6.2.3 Design Librarian.- 6.2.4 Recovery Subsystem.- 6.2.5 Validation Subsystem.- 6.2.6 In-Memory Databases.- 6.2.6.1 Introduction.- 6.2.6.2 Building In-Memory Structures: Complex Object Mapping.- 6.2.6.3 In-Memory Recovery.- 6.2.7 Version and Configuration Management.- 6.2.7.1 Introduction.- 6.2.7.2 Design Administration.- 6.2.8 Design Applications.- 6.2.8.1 Design Browser / Chip Assembler.- 7 Conclusions.- 7.1 Research Directions.- 7.2 Summary.- 8 Annotated Bibliography.
