From: Martijn Tonies Date: May 22 2007 10:38am Subject: Re: design choice - quite many tables List-Archive: http://lists.mysql.com/mysql/206921 Message-Id: <015801c79c5d$5fc69590$9902a8c0@martijnws> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Hi, > I'm working on quite big database. It consists of about 200 tables. > Additionaly about 50 tables are per year (because of annual data). It > means every year new 50 tables will have to appear in application. And > now I have a question. Should I use separate databases for "annual" data > (i.e. db2006, db2007, etc...) (i don't need constraints on that (annual) > tables) or put all the tables in one database? Is there any way to > 'catalogue'/organize tables within one database (namespace/schema)? > > Any thoughts? Yes, in my opinion, you should use the same tables for each year. So no "tables per year" or "databases per year", unless there is a very very specific reason for this. Having tables on a per-year basis also means you cannot do cross-year queries easily and you have to adjust your queries according to the current year. Martijn Tonies Database Workbench - development tool for MySQL, and more! Upscene Productions http://www.upscene.com My thoughts: http://blog.upscene.com/martijn/ Database development questions? Check the forum! http://www.databasedevelopmentforum.com