1 / 9

DB Mod

DB Mod. Group P05: Tang Zhonghua Dai Yuan

roger
Download Presentation

DB Mod

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DB Mod Group P05: Tang Zhonghua Dai Yuan Hunar Khanna Tan Tze Chong

  2. Outline • Introduction • Normal form decomposition • ER-Diagram

  3. Introduction • Problem Statement • Current database designing software are quite complicated to database rookies • Our solution (DB Mod) • A web-based application to help its users planning and design database schema • 2 ways to design • Normal Form Decomposition • ER Diagram

  4. Normal Form decomposition • Input of attribute in relation • Input of FDs and MVDs • FDs • MVDs

  5. Normal Form decomposition (cont.) • Algorithm behind • Normal Form Checker • 2nf; 3nf; 4nf; bcnf • Decomposition • bernstein • BCNF

  6. ER diagram • Sidebar • Addition entities • Adding Relationships • Adding attributes • Verify Diagrams • Screen Capture

  7. ER diagram (cont) • Canvas • Adding link between components • Attribute to Regular Entity/Relationship • Regular Entity to Regular Relationship • IS-A / EX / ID Relationships • OP Relationships • Decomposition Relationships

  8. ER diagram (cont) • Smart Context Menu • Empty space • Entities/Relationships • Attributes • Future Improvement

More Related