Database Design Tools is a great visual database tool and as a matter of fact the one leading in this category. The software supports entity relationship diagrams and lots more. With this, you are also able to construct conceptual, logical as well as physical entity relationship models effectively.
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- Powerful and easy database modeling tool in the browser. Can highly recommend it. Bob Dust Reynolds Community College - School of Business. I have been using #SQLDBM for my data modeling projects at Reynolds Community College for the past two semesters. This is perhaps the best #ERD tool yet and I have used many of them.
- Supported relational databases: PostgreSQL, MariaDB, SQLite, and MySQL. Define database objects such as tables, keys, indexes, and relations graphically and visualize JSON in entity relationship diagrams. Quick Start Guide for PostgreSQL. Quick Start Guide for MySQL. Quick Start Guide for MariaDB.
Creating database models can be a very time-consuming task if you do not get proper software support for it. Database diagram software is basically designed to help you design your database diagram efficiently in the shortest time possible. You can expect some basic features such as predefined shapes, SQL support, and ability to create complex models. Following is the list of top 7 best-picked database diagram tools.
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Free ER Diagram Tool
Free ER Diagram Tool from lucid chart provides an intuitive and collaborative solution for you and your entire organization. The software comes in a portable format to avoid the hassles of platform-dependent installation. All your data is transferred to Lucid charts servers using SSL with AES 256-bit encryption. The software is built on HTML 5 and web standards, giving it the flexibility to work on any browser, and internet enabled device. The software comes with a price tag though you can try the software for free before purchasing.
Db Schema
DbSchema is a diagram designer and query tool. The software features interactive diagrams, relational data browser, schema compare and synchronize database, query builder and editor, and much more. The software manages its own image of schema and saves it as an XML file, making it possible to store schema in GIT and deploy schema on different databases. The tool being virtual, no database experience is required to operate. You get 15 days free trial to evaluate the software.
Database Diagram Online
You can create database diagrams in few seconds using GenMyModel, a database diagram tool from database diagram online. The software features built-in predefined database diagram examples, to help you get started quickly. This application is web-based which requires no installation on your local machine. You can export images and SQL from the software. GenMyModel also assists you to design a valid database diagram by highlighting the data elements that match a valid schema.
StarUML
StarUML is the database diagram software specifically designed for Mac platform users. The software is compatible with UML 2.0 standard with a support of total 11 kinds of diagrams including class, object, and user case. Other features supported by the software include ERD support for Entity Relationship Diagrams, fast modeling support, retina display support, model-driven development and extension manager with Open API.
Navicat Data Modeler
Navicat is the database diagram software basically designed for Linux users. The software allows you to visually design database structures, perform reverse/forward engineering processes, import models from ODBC data sources, and generate complex SQL/DDL. The software features reverse Engineering as one of the key features. The modeler is fully integrated with the cloud service of the software to give you access to data from anywhere at anytime.
Database Design Tools
Database diagram online from Visual Paradigm is the database diagram software basically designed for Windows platform users. The software features Entity Relationship Diagrams(ERD), a database design tool that provides a graphical representation of database tables, their columns, and interrelationships. You can develop domains with the help of your defined templates for regular and faster use. The software comes with a price tag though you can try the free version first.
Toad Data Modeler
Toad Data Modeler from case studio is the most popular software in the database diagram software category. You just need to draw the entity relationship diagrams and the software will provide you SQL scripts automatically. The software supports 40+ database platforms. You can also use reverse engineering to rework on the already developed database. The free version of the software is limited for model databases up to 25 objects.
How to Install Database Diagram Tool?
Many of the database diagram software listed above offer a setup file, allowing an easy installation of the software. Few of the software in this category are web-based, giving you access from anywhere with just one requirement of internet connectivity. Database diagram software is basically designed to help you get the SQL script from entity relationship diagrams in very short time.
While some software in this category offers free service for the basic need of database diagramming, the number of objects that can be drawn in the database gets limited for the free version. If you are looking for fully featured software with a full list of features, the paid ones are for you. Each software offering some unique feature over others, it’s the question of personal preferences for selecting one of the best software listed here.
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ER/Builder - Free Database Modeling & Schema Generation
Franco Martinig, Martinig & Associates, http://www.martinig.ch/
ER/Builder is a free visual tool for database modeling and schema generation using an entity relationship (ER) approach. It offers also a reverse engineering feature for some databases. The currently supported databases are Oracle, SQLServer, PostgreSQL, MySQL,MariaDB, Interbase and Firebird.
Web Site:http://soft-builder.com/en/erbuilder-data-modeler/
Version tested: version 1.0 in December 2018
System requirements: Windows 7, 8 and 10
License & Pricing: Freeware currently, commercial version will follow
Support: through e-mail at http://soft-builder.com/en/contact/
Tutorials:http://soft-builder.com/en/tutorials/
Product Status and Roadmap
ER/Builder is a new data modeling product that has been developed since 2017. In earlier versions, this tool was known as ER/One. According to the development team, a commercial version is scheduled for early 2019 that will provides more features than the free version. Among the differences between the free and commercial versions, you will find: reverse engineering for Oracle and SQL Server databases, model versions management, converting the DBMS of a model, models merge, multi diagram, model documentation generation. SQLite support should be added in both free and commercial version.
Installation
The installation of ER/Builder is as simple as running the downloaded setup file on your computer. The Options panel allows you to choose where you want to store your data, which would be the default database engine managed and some choices on how you want to visualize your diagrams (colors, etc.).
Working with ER/Builder
ER/Builder works around the concept of projects. If you don't want to start your discovery of the tool with a clean sheet, the website provides a sample of existing projects with classical sandboxes of data modeling (airline reservation, product catalog, etc.) that you can use to start being familiar with the tool. There are also some tutorials available on YouTube. I would strongly recommend to watch them before you start using the tool as some features (like creating relationships) were initially not so intuitive to me. In overall, I would say that a little bit more of a formal help will be... helpful, for instance on how to connect to a local database. However, the concepts are simple and with a little bit of trial, I managed to do it.
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Data Modeling
ER/Builder modeling features are clearly oriented towards database generation, but leaves some space for true data modeling, allowing to separate for instance the attribute names from the table column name. The layout is build around a set of pages (6x4), so you can see where your items will be if you print your model. When you insert an entity / table, the screen provides all the elements to define it, including the indexes, keys, triggers. etc. The items creation SQL script is then updated in real-time. You can add simple relationships and reflective relationships. Adding many to many relationships will automatically create a new table referencing the primary keys of the two entities involved. Adding a reflexive relationship automatically adds a foreign key to the table. Undo and redo features allow you to quickly modify your diagram. You can also copy entities if you have tables that have similar structures. ER/Builder also offers a Model Validation option, but running it on my toy model didn't provide special information, producing only warning messages about missing descriptions.
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Database Schema Generation
The database schema generation is build in real-time when you create your tables, relationships and other items like indexes. You can therefore directly check the SQL translation of your modeling efforts. To generate the full model, you use the Generate DDL option where you can choose the type of items you want to generate (indexes, triggers, etc:) You can save this to a file and you can also have a 'preview' option where you can check your complete DDL before saving it or applying it directly to the database. To create directly the tables and other items in the database that you are connected to, you use the Generate Database option. In this case, you can choose also to drop (or not) existing data definitions. An error message will tell you if you are trying to overwrite an existing data definition.
Database connections
You can connect to your local database by simply (at least for the MySQL version that I use) defining your database system, user/password and database name.
Documentation
You can currently print your model or export it as an image. Exporting it as an image is however not limited to the actual space that your diagram uses, but this produces a full view (the 6x4 A4 pages), with the pages separation. Not the most easy and useful way to integrate it in another document.
Er Diagram Symbols
Reverse Engineering
I tried this with the MySQL database of a tool that I tested previously. ER/Builder allows to connect easily to an existing MySQL database and import the table and columns definitions. From this starting point, you can drag the tables to your model and begin creating the relationships between them or modifying their properties.
Conclusion
Even if it is still under development, ERBuilder is a free tool that provides currently a large of features for software developers that want to manage the data model and generate databases, especially if there are different targets in development and in production. The tool is clearly more oriented towards the needs of physical databases, but the basic visual editor should satisfy a majority of the needs for data modeling, even if it lacks some of the visual relationship notations of the Entity Relationship model for cardinality (zero, one or many) that precise how entities are involved in the relationship. On the negative side, there is currently no documentation that will help you getting directly to the feature that causes you some issues, besides some videos.
Database Er Diagram Tool For Mac Sqlite Free
This article was originally published in December 2018