File:ER Diagram MMORPG.svg
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Draw the ER diagram for representing the information requirement of an university database:
There are several colleges in the university. Each college has a name, location, and strength. A college offers many courses over two terms- Spring and Autumn- during which one or more of these courses are offered. Courseid, name, and credit hours describe a course. No two courses in any college have the same courseid; likewise no two courses have the same name. Terms are identified by year and contain enrollment numbers. Courses are offered during every term. The college also has several instructors. Instructors teach; that is why they are called instructors. Often, not all instructors are scheduled to teach during all terms; but every term has some instructors teaching. Also, the same course is never taught by more than one instructor in a specific term. Further, instructors are capable of teaching a variety of courses offered by the college. Instructors have a unique employee ID and their name, qualification, and experience are also recorded.
Summary
[edit]DescriptionER Diagram MMORPG.svg |
Čeština: Ukázkový ER diagram. English: ER Model. A sample Entity-relationship diagram using Chen's notation. A sample Entity-relationship diagram. A sample ER diagram. 한국어: ER 다이어그램 예제. Русский: Простая ER-модель MMORPG с использованием нотации Питера Чена. 中文:样例ER图. 软件工程领域之中所常见的实体关系模型. |
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This is a retouched picture, which means that it has been digitally altered from its original version. The original can be viewed here: ER Diagram MMORPG.png: .
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[edit]This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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[edit]This image is a derivative work of the following images:
- File:ER_Diagram_MMORPG.png licensed with Cc-by-sa-3.0-migrated, GFDL, GFDL-en, GFDL-self-en
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current | 10:02, 1 March 2011 | 1,390 × 1,160 (192 KB) | Jorrit nl (talk | contribs) | {{Information |Description={{cs|Ukázkový ER diagram.}} {{en|ER Model. A sample Entity-relationship diagram using Chen's notation. A sample Entity-relationship diagram. A sample ER diagram.}} {{ko|ER 다이어그램 예제.}} {{ru|Простая ER-мо� |
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