Dbvisualizer unique constraint code#
I do know about most of the little diagrams of parts of the database that are in Moodle Docs, because I drew a lot of them! I mostly learn about the database by reading the Moodle code (and once you are familiar with the Moodle way of doing things, it is easy to follow. I don't know anything about the old database diagrams. Which program is generating them? Are those models up to date on 1.9.8 or theyre standard for any version? I've read this page, seems a very good start as well, altough it seems some documentation still missing on the sub blocks description (not sure). Sorry if i repeated something stated previously, and thank you very much for your attention. We really want these diagrams so that the staff that administrate moodle on our university get used to it since most of us are scholars and undergraduate students on computer science, so it would be really nice.
![dbvisualizer unique constraint dbvisualizer unique constraint](http://www.consuminglinkeddata.org//img/sybase_ase_client_sql_query.jpg)
In case it was hand made, is there any real difference beetween the 1.98 and the 1.8x? Would it be possible to hand create an 1.98 version using as reference the 1.7x and 1.8x to organize an reverse engineering 1.98 model on workbench or would be there too much divergence?
![dbvisualizer unique constraint dbvisualizer unique constraint](http://lh4.ggpht.com/_HEpKFyzRC60/Si1v3sxI9zI/AAAAAAAAAIE/kbR8jrfbUdo/rsrc_13.png)
(the colorful big blocks that contain the small ones that contain the ids in 1.8x and the relations on 1.7x), or some tool like DBDesigner4 did the trick. So I was wondering if both the xml diagrams were hand made by Alberto Giampani, Dario Toledo and Isaac Cueto. org that would be due to something related to foreign keys, since workbench only show releationships to them (Correct me if i'm wrong please, i'm not sure.) None of the tools i tried, however, using Reverse Engineering provide me the relations between the tables (which would be nice if displayed like in the diagrams of 1.7), I read on some other board post here on. Since Workbench itself is a 'new version' or so i believe to be of DBDesigner4, I was able to import all data from the section. I've tested few tools so far(all on Ubuntu 9.04):ÄBVisualizer, WorkBench and DBDesigner4(Which unfortunately only worked using wine). We can actually see separated xml diagrams with the releations, while on the 1.8 that is not avaible, but there is now an overall view, which is also great. The Oracle server contains this data in the user_constraints table, and MySQL allows getting names from the CONSTRAINT_NAME column in information_schema.TABLE_CONSTRAINTS.Hello, it's been a while i've been trying to dig this ERD for my university, which uses Moodle and I see that, like mention before a 200+ table would be sort of useless to a staff if all together with a hell load of lines everywhere, but I noticed something very nice on In PostgreSQL, select the conname column from the pg_constraint table. In SQL Server, you can check the name of the constraint by selecting data from the sys.key_constraints table in a given database. Each database engine has a different method of naming constraints.
![dbvisualizer unique constraint dbvisualizer unique constraint](https://captainholly.files.wordpress.com/2015/04/secret1234-javasnoop.png)
You can find the name of the constraint in the meta data of your database. After this clause you enter the name of the table (in our example: product) and the clause DROP CONSTRAINT with the name of the unique constraint you want to remove. In this example the table product is altered by using the ALTER TABLE clause. We would like to drop the unique constraint in the table product from the column name.
![dbvisualizer unique constraint dbvisualizer unique constraint](https://img.yumpu.com/20178593/1/500x640/download-asp-faq.jpg)
You would like to remove a unique constraint from the column/columns in a table in a database.