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Luna Modeler

Database design tool for SQL Server

and PostgreSQL, MySQL, MariaDB, SQLite

SQL Server ERD - entity relationship diagram

Key features of the database design tool for MS SQL Server

Draw ER diagrams

Define entity-relationship diagrams for SQL Server easily. and model your database visually.

Reverse engineer

Connect to your SQL Server database and visualize existing database structures.

Create documentation

Share your pixel-perfect diagrams in high-quality printable PDF format.

Create database designs for SQL Server

Database design features include a visual definition of MS SQL database structures. Visually design SQL Server ER diagrams, specify tables, sequences, draw relationships and define SQL Server table and column specifics.

Quick start guide for SQL Server

Quick and comfortable database modeling for SQL Server

Create new objects with predefined settings. Change field positions using drag and drop. Add referenced columns to target tables automatically etc. Changes are propagated and saved immediately and in case you need to revert changes, use UNDO. A dark or light theme in UI is only a matter of your preference.

Edit column
Generate HTML report

Keep your database designs
well documented

When designing a database, you can organize SQL Server objects into diagrams, colorize items, add notes in HTML format, connect objects using lines with custom end point graphics. You can also export diagrams to PDF or HTML.

Generate SQL scripts

Generate SQL scripts for your database designs. Click a button on the main toolbar and immediately see code preview.
You can also add custom code to BEFORE and AFTER sections and save scripts for whole your SQL Server database design or for just a single SQL Server table or relationship.

Generated SQL Script for MS SQL Server

Reverse engineer existing structures

Connect to an existing SQL Server and reverse engineer database. SSH/SSL/TLS connections are supported in the Professional Edition.

Detect changes, generate report or update your projects

Connect to your database, compare the structure of your existing database with your project and generate a detailed HTML report or update your project easily.


Luna Modeler

Luna Modeler is available for Windows, Linux and MacOS.
Trial version expires 14 days after installation.

Download Luna Modeler

Key benefits – SQL Server database design tool

Blueprint to your own product

A diagram can give you a clear model of your database structure and help you recognize errors. It’s like a blueprint to your house. You know what you are building, how to connect the pieces and you have the necessary documentation.

Efficient communication

A good database design allows all your team members or clients to understand the relationships among tables in your SQL Server structures in an effective manner.

Higher productivity

Database modeling activities helps you create your SQL Server databases visually, the work is faster, you can avoid typos and make changes quickly.


Luna Modeler

You can use the same license key on Windows, Linux and MacOS.
EDU license for students and teachers is available for the Basic Edition.

Basic Edition

Go to purchase page

Professional Edition

Go to purchase page

Basic Edition – EDU

Request EDU License