> -----Original Message----- > From: Ricardo Fitzgerald [mailto:[EMAIL PROTECTED]] > Sent: Sunday, December 22, 2002 11:22 AM > To: [EMAIL PROTECTED] > Subject: Help with database Design > > create table recipes( rid int not null primary key, rname ....) ;
create table ingredient( iid int not null, rid int not null, # references recipe.rid ridorder int not null, # order of this ingredient in recipe PRIMARY KEY(iid,rid,ridorder), iname ...) ; HTH, Adolfo > Hi, > > I'm having problems trying to figure which is the best way to > solve a design > : > > I'm designing a delivery program with php and mysql, and I'm > having troubles with some tables, my problem is with the > recipes, the recipes are divided into two tables one with a > recipe id and description the other detailing the > ingredients, of each particular recipe, that's where my > problem starts because each ingredient is not unique and even > it appears in many recipes, and another thing is every time > and item is ordered their correspondent recipe ingredients > are added , ie. pizza has a code 11, recipe has code 01 then > all the ingredients in the recipe table have different > ingredient code each, and are related by the recipe code 01, > then each separate item must be counted, and added to the > ingredients general daily totals, I mean pizza uses 2 > tomatoes then the general total will show two tomatoes and > each other ingredient. There are also some combined recipes : > Pizza with a special sauce, then this item has to query two > parts of the same table, say code 12 is Pizza with a combined > sauce of mushrooms and milk, and pineapples, so each > ingredient must be added to the general total. I need help > with the design because I don't want to have database anomalies. > > Thank you all, > > Merry Xmas > Rick > > > ______________________________________________________________ > ____ Omni > ICQ#: 37031810 Current ICQ status: + More ways to contact me > __________________________________________________________________ > > > --------------------------------------------------------------------- > Before posting, please check: > http://www.mysql.com/manual.php (the manual) > http://lists.mysql.com/ (the list archive) > > To request this thread, e-mail <[EMAIL PROTECTED]> > To unsubscribe, e-mail > <[EMAIL PROTECTED]> > Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php > > > > --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
