I need an ERD Program for design my database in MySql.
I tried :
DBDesigner
MySql Workbench
The program should be able to export a sql script
In Oracle i just JDeveloper. It was very easy.
What programs do you prefer?
I personally use MySQL Workbench, or I draw it out by hand. After that it's generally super simple for me to create a database in a matter of minutes (depending on the size).
That said, a simple google search brought me to this page, so the program attached to that website might be worth checking out.
Related
I'm creating a javafx app with using wamp server for mysql database, how to make automatic backup even if database become large for a specific location, Or what's best practice in this case?
What can I do by java for this issue?
I would suggest to create a cron job for this.
You can either invoke mysqldump tool directly or create a script in any language to export data you want to, which requires more work, but is more flexible.
Alternatively you can search the Internet for some ready tool (like this which I just found, but didn't check if it works). I'm pretty sure you would find some, since it's pretty common thing to do.
Hi I am newbie to django development, but anyway I will try in this question do not to be generall.
I have strange problems while designing my model. I want to make a lot of changes - like alwyas in the begining of the project. The problem is that after one syncdb I can not change anything in model, unless I create completly new database and link it in settings.py. What is pretty strange I even can not delete this old database. When I try do it from Sequel Pro it freezes.
I googled a bit, and is really South or similar tool the only option to have some fredoom in models desgining phase in django?
I know that this mechanisms are for certain purpose like keeping data consistency on existing project, but I just started my development and have even 0 records in all the tables.
I user in my development 5.6.13 MySQL Community Server, Django 1.5. All runing on OS X.
South is a great tool for migration or if you have made some changes. It may take a little time to get through for the beginners as it was for me too, but eventually you will like it. Other than that as per your question, you can use flush, which replaced reset in django 1.5. And please remember, that it flush all the database and not just the app.
python manage.py flush
But luckily reset has been ported back in here. All you have to do is install, and add it in the settings. And then run
python manage.py reset appname
Hope this helped!
OK. Partially I found answer here: Django: Change models without clearing all data?
SAYING: "syncdb will only create tables for models which have not yet been installed. It will never issue ALTER TABLE statements to match changes made to a model class after installation. Changes to model classes and database schemas often involve some form of ambiguity and, in those cases, Django would have to guess at the correct changes to make. There is a risk that critical data would be lost in the process. If you have made changes to a model and wish to alter the database tables to match, use the sql command to display the new SQL structure and compare that to your existing table schema to work out the changes."
OK. I see that I can run python manage.py sql <app_name> then should I paste it in python manage.py dbshell?
via dbshell I managed to delete whole database, what was not possible in Sequel Pro.
python manage.py dbshell
and then via MySQL:
drop database <db_name>;
And why the database when accesing from Sequel Pro is froozen?
I was trying to avoid South, because there were many opinions that it is confusing, and time consuming to learn. After sometime I look back on SOUTH and I have to say:
It is completely WORTH learning it, what is not hard at all.
It is very nice tool for dealing with model, which changes dynamically.
I can propose a nice tutorial video to all newbies, who will consider either it is or not worth to learn. http://www.youtube.com/watch?v=7yCmAhthkMk
I am trying to synchronize 2 different type of database together. Here is a better explanation of what I am trying to do:
I have the MySQL database on a server with the main database. I have an application installed on multiple computers.
I need the main database to be updated with the modification inside the computers and I need the computer version to get the updates from the main database.
I have seen the replication option in MySQL but it's not exactly what I want to do. I have seen other stuff like REPLACE INTO but I still don't see a clear solution.
I'm not asking for a full solution but maybe a good pseudocode or some cool functionality so I can try to implement it. This will be used on my end of school project.
I obviously have a timestamps on each row so I can detect changes.
This is how I would do this if I had an app that will run in different SQL environments.
It will be cleaner if you do the communication between yourApp & DB through some php class. This class instance will be created based on user's SQL version. Then, it is for your code in the class to decide how to connect to your DB.
After looking at a lot of questions..i found no real answer for this.
I redisigned an Database for our customer.
With Microsoft Access i found a good Tool to get old table Data in my new well formed Database Structure. It is really easy but takes a lot of time (cause handling old Data with a lot of care).
Are there any Open Source Tools that bring that facilities like Microsoft Access?
To clear it up: I "just" want to reorder old Firebird Database Data in a new "best-practise" Way.
Edit:
I would be really nice if i can get a Log File or something similar to have some documentation on the changes.
Update:
After checking some of the Tools of that Wikipedia Site. I found no real Logging Mechanism.
How do you documentate the changes on a Database? Simply by writing it down?
Result:
So i dont got an real answer...i ma still searching for an nice tool. thnak you guys for the hints and your thoughts regarding this question. I want to reward Kenneth Cochran with the Bounty cause he pointed me to ETL. Thank you!
Talend's Open Source ETL supports FireBird. Very cool tool.
http://www.talend.com/download.php?src=DataGovernanceBlog
It sounds like what you're asking for is an ETL(extract, transform, load) tool.
Wikipedia has a list of open source tools that may help with this. I've not used any of them personally.
Well, I used the Pentaho suite for doing ETL using their Kettle tool.
It's quite easy to use and should be more than enough to reach your intent.
And it's open source.
Give a look at it.
I advice you to use a tool like IBExpert or Database Workbench which are the best tools for Firebird.
For migrating Firebird 1.5 to Firebird 2.1 : you just have to make a backup of your database with Firebird 1.5 server and restore your database with Firebird 2.1 server
I've used Excel in the past to document data model changes - each worksheet used the application version in order to sync with our tags in CVS. Every thing was logged in it - columns that were removed as well as minor alterations to datatypes like varchar(10) to varchar(20) etc along with a note describing why the change was made.
Personally, I've only ever scripted things like these as DDL/DML scripts broken into a script that dealt with table creation, constraint dropping, index drops, DML script(s), constraint application, index application, and removing orphaned tables.
If you want a basic ETL tool, that is client based (and cheap at $300), look at Advanced Query Tool. It mainly queries any type of ODBC connection(including Excel files set up that way), but also has some extended features, including moving data. And has a command line interface. http://www.querytool.com/
I've used it instead of Informatica for one-off jobs, but I've also used to extract from Excel to another file for business users, for a few months, scheduled from my desktop.
Do you know any applications to synchronize two databases - during development sometimes it's required to add one or two table rows or new table or column.
Usually I write every sql statement in some file and during uploading path I evecute those lines on my production database (earlier backing it up).
I work with mySQL and postreSQL databases.
What is your practise and what applications helps you in that.
You asked for a tool or application answer, but what you really need is a a process answer. The underlying theme here is that you should be versioning your database DDL (and DML, when needed) and providing change scripts to be able to update any version of your database to a higher version.
This set of links provided by Jeff Atwood and written by K. Scott Allen explain in detail what this ought to look like - and they do it better than I can possibly write up here: http://www.codinghorror.com/blog/2008/02/get-your-database-under-version-control.html
For PostgreSQL you could use Another PostgreSQL Diff Tool . It can diff two SQL Dumps very fast (a few seconds on a db with about 300 tables, 50 views and 500 stored procedures). So you can find your changes easily and get a sql diff which you can execute.
From the APGDiff Page:
Another PostgreSQL Diff Tool is simple PostgreSQL diff tool that is useful for schema upgrades. The tool compares two schema dump files and creates output file that is (after some hand-made modifications) suitable for upgrade of old schema.
Have scripts (under source control of course) that you only ever add to the bottom off. That combined with regular restores from your production database to dev you should be golden. If you are strict about it, this works very well.
Otherwise I know lots of people use redgate stuff for SQLServer.
Another vote for RedGate SQL Compare
http://www.red-gate.com/products/SQL_Compare/index.htm
Wouldn't want to live without it!
Edit: Sorry, it seems this is only for SQL Server. Still - if any SQL Server users have the same question I'd definitely recommend this tool.
If you write your SQL statements for your development database (which are, I imagine, series of DDL instructions such as CREATE, ALTER and DROP), why don't you keep track of them by recording them in a table, with a "version" index? You will then be able to:
track your version changes
make a small routine allowing the "automatic" update of your production database by sending the recorded instructions to the database.
I really like the EMS tools.
There tools are available for all popular DB's and you have the same user experience for every type of DB.
One of the tools is the DB Comparer.
TOAD
saved many an ass several times in the past. Why do people run sql with no exit strategy?
the redgate one is good also.
Siebel (CRM, Sales, etc. management product) has a built-in tool to align the production database with the development one (dev2prod).
Otherwise, you've got to stick with manually executed scripts.
Navicat has a structure synchronisation wizard that handles this.
I solve this by using Hibernate. It can detect and autocreate missing tables, columns, etc.
You could add some automation to your current way of doing things by using dbDeploy or a similar script. This will allow you to keep track of your schema changes and to upgrade/rollback your schema as you see fit.
Here's a straight linux bash script I wrote for syncing Magento databases... but you can easily modify it for other uses :)
http://markshust.com/2011/09/08/syncing-magento-instance-production-development
DBV - "Database version control, made easy!" (PHP)