I want to reverse engineer (import into diagram form) the database definition dump of a database I have, then since no foreign keys are defined in this particular database, I want to be able to manually create the table to table key mappings (using crow feet notation if possible).
I've taken a look at MySQL Workbench, and it gets me 85% of the way there. The nice little relationship lines won't show up though, and the auto arrange is horrible. A quick search of google turns up several other options, so I can evaluate these on my own, but:
Can I get some feedback from you guys for which are your favorite tools to use for this scenario? Why do you like that(your) particular tool?
My intended purpose is to take a legacy database, and train jr. engineers on the organization of the DB. Visual aids are nifty. My fallback option is to recreate an ER diagram by hand. Not fun for 250+ tables.
Generate ERD with PHPMyAdmin is also a better option. PHPMyadmin added this functionality from version 3.4
detail step to generate ERD : http://goo.gl/0z3vFE
You can refer to PHPMyAdmin documentation for more info: http://www.phpmyadmin.net/documentation/#pmadb
SchemaCrawler is a free, open source tool that can generate E-R diagrams, with the help of GraphViz. You can use regular expressions to select the tables and columns you want to display. Relationships are inferred from commonly used naming conventions.
Check out Vertabelo.
It's an online database modeler that works under Chrome browser.
It provides you with:
Moreover it's free of charge.
I've had some success using two commercial (but relatively cheap!) tools- but I still haven't found any really solid open source ones after months of looking.
My understanding is that MySQL Workbench is still under active development, but they've been banging on it for a long time without really wrapping it up. Maybe now that Sun owns them, they'll get it together.
You might check out DBDesigner ...
Now known as MySQL Workbench
http://dev.mysql.com/downloads/workbench/5.0.html
I am using Mysql Workbench 6.1. By default the diagram will look crunched for large number of tables, making it difficult to figure out relationship between tables. Many tables will overlay on other tables. This is because, the default layout size is small.
In the menu, Go to Model >> "Diagram properties and size".
Change width and size to some thing big (for example width 23 and height 5) -
Then in the menu, Go to Arrange >> Autolayout.
Now we should see a clean diagram with all the relations. Now we can re-adjust width and height, more meaningfully