| Presentation | 2016-11-03 Understanding of Class/ER Diagram based on Object Lifetime Shigeo Kaneda, Akio Ida, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | Class Diagram / ER Diagram / Relationship / The third normal form / Object / Lifetime / Functional Dependency |
| Paper # | KBSE2016-25 |
| Date of Issue | 2016-10-27 (KBSE) |
| Conference Information | |
| Committee | KBSE |
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| Conference Date | 2016/11/3(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagano-Engineering Campus, Shinshu University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shigeo Kaneda(Doshisha Univ.) |
| Vice Chair | Fumihiro Kumeno(Nippon Inst. of Tech.) |
| Secretary | Fumihiro Kumeno(Shinshu Univ.) |
| Assistant | Hajime Iwata(Kanagawa Inst. of Tech.) / Kohei Sakurai(Kanazawa Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Knowledge-Based Software Engineering |
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| Language | JPN |
| 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) | |
| Keyword(1) | Class Diagram |
| Keyword(2) | ER Diagram |
| Keyword(3) | Relationship |
| Keyword(4) | The third normal form |
| Keyword(5) | Object |
| Keyword(6) | Lifetime |
| Keyword(7) | Functional Dependency |
| 1st Author's Name | Shigeo Kaneda |
| 1st Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 2nd Author's Name | Akio Ida |
| 2nd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| Date | 2016-11-03 |
| Paper # | KBSE2016-25 |
| Volume (vol) | vol.116 |
| Number (no) | KBSE-284 |
| Page | pp.pp.7-12(KBSE), |
| #Pages | 6 |
| Date of Issue | 2016-10-27 (KBSE) |