Best FREE data modeling tool

What is the best FREE data modeling tool? Thanks.
Kalman Toth Database & OLAP Architect
SQL Server 2014 Database Design
New Book / Kindle: Beginner Database Design & SQL Programming Using Microsoft SQL Server 2014

Hi Kalman,
According to my knowledge, Microsoft Office Visio is helpful for building data model. For more information, please review this article:
Create a Database Model (also known as Entity Relationship diagram).
Besides, you can also use other third-party tools such as
Erwin, SQL Power Architect to design SQL Server database. However, Microsoft cannot make any representations regarding the quality, safety, or suitability of any the third party software or information.
There is also a discussion about free data modeling tool in the following thread for your reference.
https://social.msdn.microsoft.com/Forums/en-US/b70d2cdb-dc7f-4e89-a0ae-9dbf5687199e/free-data-modelling-tool?forum=databasedesign
Thanks,
Lydia Zhang

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OWB9i as Data Modelling tool

I was told that OWB9i can also be used as Data Modelling tool. Assume we had developed DWH using Bus Architecture. Now How can I see the entire scehma that contains all Facts and Dimensions with their attributes and measures with primary key and Foreign key relationships?. Also please tell me what are the features available in OWB9i tool as Data Modelling tool.Thanks in advance for your valuable information.

SQL Developer has a data modeller module which, I believe, has recently changed to a free license.
http://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html
http://www.oracle.com/technetwork/developer-tools/datamodeler/overview/index.html
I believe this has reverse engineering capability.
I'm not sure whether 8i will cause it a problem.

Export import in sql developer data modeling tool

I tried sql developer data modeling tool
but i have a proble
i select file> import > data dictionary
then created a connection to db and selected some tables and got the er digram successfully
then i goto file > export>to data modeling design and save it to xml file
but when i give this file to another developer and he imported the file File>import>data modeling design
the digram is not displayed
is it a bug or im doing something wrong

ok it was my fault
it's not the xml only
there is a folder with the same name bside the xml file and should be included within the exchange

Data modeling tool: physical model migration

Hi,
I have imported my relational model with a generated physical model for oracle 9i.
I'd like to migrate my DB to oracle 10g, but I don't feel like creating a new physical model for Oracle 10g from the scratch and configuring it all.
Is there any way to copy that oracle 9i physical model into an oracle 10g model? I know there could be any implementation change from 9i to 10g, but at least copy the main 99% (and warn about the 1% impossible to replicate in 10g).
Could this feature be taken into the production version?
By the way, is this a BUG? when I start the tool, my oracle 9i physical model is not shown in the tree, and I've to right-click over physical model, press open, and then select oracle 9i, to be shown in the tree. But I close the data modeling tool, and when I start again, there is no physical model shown in the tree :(
thanks a lot in advance, I'm evaluating the tool.

Thank you very much for your reply, and hearing those news makes me very happy, because I'm evaluating the product and I miss some functionality like that.
By the way, where can I find the new functionality or the fixed one that is going to be on the production release? Or could yo send it to me by email or any other way? I'm very interested in it.

How to print ERD from Data Modeler Tool

Hello Everyone,
I have an oracle 10g DB and I want to create its ERD. I was able to export the tables using Data Modeler tools but I cannot find the option to arrange these table on pages and then print them. How can I do that? It's a very basic requirement and I am sure it must be here somewhere but I can't seem to find it.
Regards,
Afraz Ali

Hi Afraz,
there is no support for arranging tables on pages. For printing - use "File>Print" or "File>Print Diagram".
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Oracle Data Modeling tool interoperability with QDesigner models.

Hello,
Would it be possible to get some information on how Oracle SQL Developer Data Modeler works with models from other data modeling tools such as QDesigner.
How can Quest QDesigner read the .cdm (conceptual data models) and the .pdm (physical data models) from QDesigner.
Regards,
Mary

SQL Developer Data Modeler does not work with QDesigner models.
Sue

OBIEE Best Practice Data Model/Repository Design for Objectives/Targets

Hello World!
We are faced with a design question that has become somewhat difficult and we need some help. We want to be able to compare side-by-side actual measures with their corresponding objectives/targets. Sounds simple. But, our objectives are static (not able to be aggregated) with multi-dimensionality and multi-levels. We need some best practice tips on how to design our data model and repository properly so that we can see the objective/target for a measure regardless of the dimensions that are used in the criteria and regardless of the level.
Here is some more details:
Example of existing objective table.
Dimension1
Dimension2
Dimension3
Obj1
Obj2
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NULL
NULL
NULL
.99
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1Q13
DIM1VAL1
NULL
NULL
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2.4
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DIM2VAL1
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NULL
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NULL
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NULL
NULL
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- We currently have 3 fact tables with 3+ conformed dimension tables and a few unique dimension tables.
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hi..yes this suggestion is nice...first configure the sensors(activity or variable) ..then configure the sensor action as a JMS Topic which will in turn insert the data into a DB..Or when u configure the sensor action as a DB..then the data goes to Oracle Reports schema..if there is any chance of altering the DB..i mean if there is any chance by changing config files so that the data doesnt go to that Reports schema and goes to a custom schema created by any User....i dont know if it can b done...my problem is wen i m configuring the jms Topic for sensor actions..i see blank data coming..for sm reason or the other the data is not getting posted ...i have used a esb ..a routing service based on the schema which i am monitoring...can any1 help?

Data Model Exporting - MDM to Erwin or another data model tool

I would like to export the latest MDM physical data model in production to any erwin modelling tool or any othe data modelling tool

To export the schema of an MDM repository to an XML file:
1. In the Console Hierarchy tree, right-click on the MDM repository whose schema you want to export and choose Export Repository Schema from the context menu, or select the tree node and choose Repositories ® Export Schema from the main menu.
If the top-right pane is currently displaying the list of MDM repositories, you can also right-click on the repository in the grid and choose Export Schema from the context menu.
2. Click Save to close the dialog and export the schema.
Schema files are stored in XML format in a user-defined location using a user-defined filename. The file contains the schema definition only; no table or field content.
http://help.sap.com/saphelp_mdm550/helpdata/en/f2/2f21039e9146098e7b238f1a4c8e5e/content.htm
Thanks,
Shambhu.

Data Modeling Tool

Does Oracle 9i provide a database modeling tool? if not, which tool in the market would you recommand? thanks in advance!

Oracle Gives Designer Tool for Data Modelling.
However ER-Win And ER-Studio can be also used as both of them are vwry good tool for modelling.
Regards

Installing Data Modeler tool

Hi,
I am unable to install data modeler on our PCs. We have java 1.5 on all our PCs and it is not possible to upgrade to java 1.6. This is because a mandatory application in the organization is not configured to use java 1.6.
Is there any other way that we can download Data Modeler on our PCs.
Thank you.

Hi,
no problems if your OS is Windows - you need the version with JRE included - in this case your environment won't be affected (no installs).
Philip

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I need to know if it exists a Microsoft tool to model the data structures of a data warehouse. I generally use the SQL Server diagrams but I'd like to know an enhanced tool. Visio?
Thanks

Hi,
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http://office.microsoft.com/en-gb/visio/visio-professional-2013-free-trial-flowchart-software-FX103791368.aspx
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http://social.technet.microsoft.com/Forums/sqlserver/en-US/620009b1-9625-4e1f-8574-f4049718ffe2/shapestemplates-bi-for-visio
Kind Regards,
Kieran.
Kieran Patrick Wood http://www.innovativebusinessintelligence.com http://uk.linkedin.com/in/kieranpatrickwood http://kieranwood.wordpress.com/

Numeric overflow in data modeling tool

It only happens with one of my schemas but when I attempt to import it from the data dictionary it fails with a numeric overflow error:
2009-04-01 10:15:34,899 [Thread-2] ERROR AbstractDBMExtractionHandler - java.sql.SQLException: Numeric Overflow
2009-04-01 10:22:50,532 [Thread-3] ERROR AbstractDBMExtractionHandler - java.sql.SQLException: Numeric Overflow
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Thanks,
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Hi Coburn,
we have this bug reported several times. Unfortunately we cannot reproduce it. The bug is related to something specific - I import my whole database (1800 tables, object types, object tables) and no problem. We want to sort it out but we cannot fix it if we cannot reproduce it. Any help is welcome.
Thanks in advance,
Philip

When to expect a new version of the Data Modelling tool ?

Hello,
just a quick question - what's the time horizon for the new version ? and where ( if at all ) can i see the list of bugs/features to be addressed in it ?
Thank you.
Andrew
Edited by: andrey on Jan 16, 2009 8:40 AM

Hello,
what is soon? Do you know exact date or month?
Thank you
Regards
Martin

Will SQL Developer always be free? Evidently Data Modeling extension won't.

After learning the Data Modeling extension to SQL Developer was actually a for-pay product (only the Early Adopter release is free, evidently), I now wonder:
Will SQL Developer always be free, or is there a chance it will be converted into a for-pay product? I don't want to invest any more time learning the tool if there will be future license fees to pay.
I was sad to learn Data Modeling won't be free. Not knowing how much it might cost, I don't want to invest any time at all playing with it.
Thanks.
Dana

Thanks K. Hope to learn more about the Data Modeling extension pricing--not that I'll be able to afford it. Too bad--I see Oracle going in a great direction with SQL Developer being free. It's a shame Data Modeling won't be. Right now, I am stuck using Enterprise Architect--and that's very limited for database design. Evidently it can be modified to do a lot more, but I don't have the skills or time to turn it into something it should do out of the box.
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http://www.sqlpower.ca/page/architect
Maybe it has improved since then (about a year ago).

Best FREE data modeling tool

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