Paper Abstract and Keywords |
Presentation |
2016-11-03 14:20
Understanding of Class/ER Diagram based on Object Lifetime Shigeo Kaneda, Akio Ida (Doshisha Univ.) KBSE2016-25 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
UML specification categorizes “association” as a semantic relationship. This definition is not practical. In this paper, the association is taken as a relationship that only one instance is uniquely specified if one instance is selected. This relation is nearly equal to “functional dependency” of the RDB theory. The relationship is one-to-many relation, and at least one multiplicity should be “1”. This paper analyzes the lifetimes of two instances that the association builds a bridge. The analytical results show that the lifetime of the input side instance should be included within the longer lifetime of the output side instance. This theoretical result shows that the existence dependence class diagram has the equivalent expression ability with the conventional UML class diagram. Also, properties of timestamp or validity period are important tool to realize the functional dependency having “1” multiplicity in one side of the association. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Class Diagram / ER Diagram / Relationship / The third normal form / Object / Lifetime / Functional Dependency / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 284, KBSE2016-25, pp. 7-12, Nov. 2016. |
Paper # |
KBSE2016-25 |
Date of Issue |
2016-10-27 (KBSE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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KBSE2016-25 |
Conference Information |
Committee |
KBSE |
Conference Date |
2016-11-03 - 2016-11-04 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Nagano-Engineering Campus, Shinshu University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
KBSE |
Conference Code |
2016-11-KBSE |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Understanding of Class/ER Diagram based on Object Lifetime |
Sub Title (in English) |
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Keyword(1) |
Class Diagram |
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ER Diagram |
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Relationship |
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The third normal form |
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Object |
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Lifetime |
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Functional Dependency |
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1st Author's Name |
Shigeo Kaneda |
1st Author's Affiliation |
Doshisha University (Doshisha Univ.) |
2nd Author's Name |
Akio Ida |
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Doshisha University (Doshisha Univ.) |
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Speaker |
Author-1 |
Date Time |
2016-11-03 14:20:00 |
Presentation Time |
45 minutes |
Registration for |
KBSE |
Paper # |
KBSE2016-25 |
Volume (vol) |
vol.116 |
Number (no) |
no.284 |
Page |
pp.7-12 |
#Pages |
6 |
Date of Issue |
2016-10-27 (KBSE) |
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