The SQL Power Architect data modeling tool was created by data warehouse designers and has many unique features geared specifically for the data warehouse architect. It allows users to reverse-engineer existing databases, perform data profiling on source databases, and auto-generate ETL metadata.
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SQL Power Architect
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Open System Architect
Open System Architect (OSA) is an application used for modelling a system. OSA currently supports data modelling (physical and logical) with UML in the works. The unique thing about OSA is that it is an Open Source product licensed under the General Public License (GPL). The free factor makes OSA particularly interesting for students but OSA is powerful enough to compare favourably with products costing thousands of dollars.
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CA ERWin Data Modeler
The CA ERwin Data Modeler Community Edition is a FREE, entry-level data modeling tool that is a subset of CA’s flagship CA ERwin Data Modeler product. It is a great way for students and those new to modeling to get started with an industry-leading data modeling tool.
It offers many of the core features of data modeling with a limit of 25 model objects. This includes forward and reverse engineering, complete compare, design layers, and more. See the product comparison matrix for a full listing of the differences between the Community Edition and the commercial edition of CA ERwin Data Modeler.
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DB Designer
DBDesigner 4 is a visual database design system that integrates database design, modeling, creation and maintenance into a single, seamless environment.
It combines professional features and a clear and simple user interface to offer the most efficient way to handle your databases.
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dbForge Studio for MySQL
dbForge Studio for MySQL is the universal MySQL and MariaDB front-end client for database management, administration and development. Devart's MySQL GUI tool provides utilities to compare, synchronize, and backup MySQL databases with scheduling, and gives possibility to analyze and report MySQL tables data. dbForge Studio for MySQL now works with any MariaDB database servers, and supports all MariaDB objects types. Everyone can visually design database structures, execute SQL queries and scripts, and manage MariaDB users and privileges.
Key features:
* Includes support for MySQL server versions 3.23-5.x, MariaDB server versions 5.5 and 10.0, Percona and Amazon RDS
* Administration and Maintenance. Tools for MySQL database administration and management include means for managing user privileges, MySQL service control, managing server variables, table maintenance, etc.
* Data Analysis
* Data Comparison and Sync
* Data Editor
* Database Backup. Dump databases in SQL format and schedule regular MySQL database backups.
* Database Explorer
* Database Refactoring. Renaming tables, columns, views, procedures, functions and indexes. Possibility to generate refactoring script of a database without changing it.
* Debugger. The first debugger for MySQL that offers step-by-step code execution, breakpoints, watches, a call stack, a variables evaluation mechanism to automate debugging of MySQL stored routines and triggers and keeps MySQL server's logic of procedure execution.
* Exporting and Importing Data
* Flat Table Editor
* Object Editors
* Database Projects
* Query Builder
* Query Profiler. The tool helps you detect problems and optimize SQL queries via GUI.
* Schema Comparison
* SQL Editing and Execution
* Visual Database Designer
* Pluggable authentication is supported. The product provides the extended support of pluggable authentication modules for MySQL servers.
* Connection to Sphinx Search Engine is supported
* Phrase Completion
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pgModeler
pgModeler is an open source tool for modeling databases that merges the classical concepts of entity-relationship diagrams with specific features that only PostgreSQL implements.
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DbSchema
DbSchema - ER Diagram & SQL Database Tool
DbSchema is a diagram-oriented database tool, compatible with all relational databases. You can download it an try it for free. Key features :
Interactive diagrams also called layouts.
Edit of schema ( eq. alter table... ) directly in the diagram
Save schema and layouts to project file. This gives the ability to:
Have a persistent documentation and diagrams of the schema
Distribute or migrate the schema over multiple databases
Upload the project file in a CVS or SVN server and share it in a team
High-quality print-outs and HTML5 documentation
Visual relational browse of the data over multiple tables
Auto-complete enabled SQL editor
Visual Query builder
Synchronize the schema between different databases. Migrate production databases to the latest development schema.
Convert schema to different databases
Generate schema SQL scripts
Configurable diagram skins, best performance for large schemes
compatible with all relational databases
DbSchema can work with MySql, PostgreSql, SqlServer, Derby, Firebird, Oracle, Db2, Informix, HSql, Pointbase, Mimer, Pervasive, Sybase and all other relational databases.
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Vertabelo
Online tool for visual database design. This one web application support seven major database engines: PostgreSQL, MySQL, Microsoft SQL Server, SQLite, Oracle 11g, IBM DB2 and HSQLDB.
Vertabelo allows you to create your database model simply by graphically drawing tables and references. The application validates your model all the time and gives you hints on how to improve it. At any moment you can see a preview of the SQL that will be generated for a selected element.
You can share your database models at three different access levels: Owner, Editor and Viewer. Furthermore, everyone who shares a model may open it at the same time. When the model is opened for editing for one person, it is read-only for others. Everyone can see changes in the model just after an autosave.
If you need to share a model with your customers or partners and they don't want to create accounts in Vertabelo, you can generate the public link to your model and send it via e-mail.
Reverse engineering tool allows you to import an existing database structure and build a model of it. This way you can visualize the data structure of your database and work on it.
If you develop web applications, Vertabelo delivers you built-in support for some popular ORMs like Propel (for PHP developers), SQLAlchemy (for Python developers) and JOOQ (for Java developers).
The application works completely online and no installation is needed. Just register an account, log in and you can start working on your model from any place in the world connected to internet.
Vertabelo offers a free plan which is limited by a certain number of models available to create and the number of tables per one model. For larger projects and companies there are different paid plans. Notice that Vertabelo is totally free for students, lecturers, open source projects and non-profit organizations, provided that it will be used only for educational or non-commercial purposes.
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dbDiffo
dbDiffo is an online database designer
Supported Database servers: IBM DB2, Microsoft SQL Server, MySQL, Oracle, PostgreSQL
dbDiffo's History feature continously documents all changes made to the database structure. The History feature allows restoring earlier versions of the database model. You can generate an ALTER script between any different states of the model.
No more bugs during change (alter) script generation. dbDiffo's History feature documents all changes made to the database structure. This allows generating a change (alter) script from any steps of the database's creation.
dbDiffo's History feature documents all changes made to the database structure, allowing to rewind any number of steps, and view an earlier state of the database.
You can place milestones to mark important stages or versions in a database's history.
dbDiffo requires internet connection. No need for installation, it runs in certain internet browsers.
Free reverse engineering tool. Reverse engineer your current database model and develop it using dbDiffo.
You can create foreign keys by drag 'n' drop. You need to simply drag the table's column to another column, thus creating a foreign key constraint between the two tables.
If you require individual help concerning dbDiffo, users with annual subscriptions have access to our special Mentor Support service.
Table columns, foreign keys and indices are all clearly visible on the diagram. You can assign the same colour to tables belonging to the same function or module. You can add comments to the visual diagram.
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SQL Developer Data Modeler
Oracle SQL Developer Data Modeler is a free graphical tool that enhances productivity and simplifies data modeling tasks. Using Oracle SQL Developer Data Modeler users can create, browse and edit, logical, relational, physical, multi-dimensional, and data type models. The Data Modeler provides forward and reverse engineering capabilities and supports collaborative development through integrated source code control. The Data Modeler can be used in both traditional and in Cloud environments.
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Model Xtractor
Free visual data modeling inspection tool for most popular one-way reverse-engineered relational databases. With a generic graphical interface, and auto-generated detailed, structural, relationships, simple, graph or topological models. Expanded, collapsed, minimized or transparent shapes. Chain relationships, custom joins and aliases, to enhance your model without altering the database itself.
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