The Entity-Relation modelling tool for the freeware community
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NEWS in last release
- Added new MySql and Postgres datatypes
- Improved view of model (e.g. primary keys are displayed
- Other fixes
- 0.1.4.1 released at 15.04.2004
What is PyDBDesigner?
PyDBDesigner is a free relational database modeling tool that is
planned to be able to design both logical and physical models similarly
to Erwin(c) and PowerDesigner. Its goal is to provide a useful toolset
that allows developers analysts
and database designers to design and develop databases from the verbal
to the schemas and SQL scripts.
Planned features include:
The first step is to create a correct tool for physical modeling
(tables, properties, relations).
- Entites, properties, relations, domains etc.
- SQL output
- Model validation
It is 0.1.4.1 as of 15.04.2004.
Why is this project started?
Because there is no such a tool is available as a
freeware. There is a project called DbDesigner, but it seems to
be discontinued and its functionality is not enough for modeling (and
the concept behind it seems to be weak).
GPL, of course.
Oh, yes, it has concept as well...
The concept is to implement ER logical and physical modeling paradigm
as correctly as possible, meanwhile creating a tool that is useful as
soon as it is possible. So the development concept is that features are
added rapidly, but carefully (trying to leave space to the features
that come later).
What does it mean?
For example, the "type" class is good enough to implement data domains,
however, the code that actually creates domains using GUI is not
implemented. The "type" attribute of the properties uses this object,
so adding domains to attribute types is easy.
What is the current status?
NEW: We are at 0.1.3 now. User can create new model, add
entities and properties to model and properties to entities. The
results can be saved and loaded back. SQL creator script can be
generated. Relations can be generated automatically (both single and
composite keys). Printing is supported as well.
Currently this program is under heavy development. I add features
almost every day, so it is hard to determine the current status. Truly,
it is in its early development phase. The development environment is
Python and wxPython, so adding features is a very fast activity.
Here is one:
And another one:
Where is the current code?
It is in SourceForge. I will put the stuff in CVS as
Requirements to install
To play with it you need
wxPython 2.3.3 (this one requires
wxWindows as well)
If you have questions, want to help etc. send an email to me.
There is a mailinglist
in SourceForge as well.
Last changed: 15.04.2004.