1 / 8

Athletic championship

Databázové systémy I. Athletic championship. Zadanie : Vytvoriť entitne-relačný model pre IS majstrovstiev v atletike Zlepšiť prácu s výsledkami, zrýchliť prístup k tabuľkám tímov a súťažiacich Korektné vytvorenie entít, atribútov a vzťahov medzi nimi. Požiadavky

thuong
Download Presentation

Athletic championship

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. Databázové systémy I Athletic championship

  2. Zadanie : • Vytvoriť entitne-relačný model pre IS majstrovstiev v atletike • Zlepšiť prácu s výsledkami, zrýchliť prístup k tabuľkám tímov a súťažiacich • Korektné vytvorenie entít, atribútov a vzťahov medzi nimi

  3. Požiadavky • teams are dividedintoperformanceclasses • there are championships in eachclassduringtheseason • disciplines are dividedaccording to theagecategries and sex • teamsreceivepointsthat are counted to themain table • racerisregisteredonly in one team • statisticsstoretheperformancesofallracers

  4. Entity • SEASON • PERFORMACE CLASS • TABLE • TEAM • RACER • CHAMPIONSHIP • DISCIPLINE • STATISTIC • POINTS • AGE CATEGORY

  5. Maticový diagram

  6. ER diagram

  7. Integritné obmedzenia • Performancesofmen and women are countedasegualwithinthe team. • Notevery team has to participate in allthecategories. • Onlyregisteredracermayparticipate.Ifracerisregistered in one team, hecannotparticipate in otherone. • Racers are notallowed to changeteamsduringseason. • Class has 10 teams, thelowestclass has changingnumberofteams. • Atthe end ofseason, twoteamsproceed to higherclass and twoteamsgodown. • Each team cansend a maximum oftreeracersintoeachdiscipline in the championship. • A oneracercanparticipate in anynumberofdisciplines.

  8. The end

More Related