Re: Cenceptual help needed - periodic events
От | Josh Berkus |
---|---|
Тема | Re: Cenceptual help needed - periodic events |
Дата | |
Msg-id | web-148510@davinci.ethosmedia.com обсуждение исходный текст |
Ответ на | Cenceptual help needed - periodic events ("Pat M" <pmeloy@removethispart.home.com>) |
Список | pgsql-sql |
Pat, > I'm goofing around, designing a planned maintenance system. In a > couple of > weeks I'll be taking on the actual scheduling of tasks. How would you > experts out there approach this? I've beeen thinking I can approach > this two > ways. I'm working on a legal calendar system, and we're storing all events as rows in the database. However, in our case the reasons are overwhelming, since the rules on how new events are generated (aside from those entered by users) are complex enough to fill several pages. Calculating on the fly isn't conceivable. Also, all of our events are, at one level or another, dependant on a user-entered event. Thus we can make all auto-generated events "children" of the parent event and change them when the parent changes. I designed another system that was all auto-scheduling -- a weekly produce delivery system. In this system, we took the expedient of not generating any even more than a week ahead of time, and providing functions that would drop all events and then re-create them, Differently, in a time entry system I designed all of the due dates for timecards were calculated on the fly by a complex view. So it depends on the number and complexity of the rules you will be applying. If the rules are very complex and/or require procedural logic, you probably want to generate and store records. Otherwise, no. -Josh ______AGLIO DATABASE SOLUTIONS___________________________ Josh Berkus Complete informationtechnology josh@agliodbs.com and data management solutions (415) 565-7293 for law firms, small businesses fax 621-2533 and non-profit organizations. San Francisco
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