Why Luna Modeler Why Luna Modeler? Discover the deliberate choices behind Luna Modeler — desktop-native, perpetual license, offline-first, and platform-specific SQL — and why they matter for serious database work. How to List Databases and Show Collections in MongoDB Learn how to show collections in MongoDB using show collections, db.getCollectionNames() or db.getCollectionInfos() — plus a visual approach with Moon Modeler. Top 5 Data Modeling Software Products to Know in 2026 Explore the top 5 data modeling software options that empower software development, database design, analytics, and business processes. Assets for Better Data Modeling with Luna Modeler Explore assets for better data modeling with Luna Modeler. Design databases visually while adding context and flow. PostgreSQL Check Constraints Find out how to implement check constraints in PostgreSQL to ensure data quality and enhance your database design. SQL Server Check Constraints Learn how to use check constraints in SQL Server to ensure data integrity and prevent invalid entries in your database. PostGIS Core Support Unlock powerful mapping features with PostGIS Core Support in Luna Modeler and enhance your diagrams with specific data types. Visualization of existing SQL Server databases Connect to your SQL Server and reverse engineer your existing database structures. Visualize databases and create ER diagrams. Top 6 GUI Tools for SQLite in 2026 Explore the best tools for SQLite to generate and execute SQL scripts effortlessly. Create and manage your databases with ease! Free Flowchart & Data Flow Diagram Tool? Simplify your workflow with Merit Modeler, the user-friendly desktop tool for free data flow diagrams and flowcharts. Free ER diagram tool? Free ER diagram tool for Sequelize - ORM for PostgreSQL, MariaDB, SQLite and SQL Server. Create smaller projects with the free version. Oracle Database Design Luna Modeler for Oracle database design. See how to visually create ER diagrams for Oracle Database and generate SQL Scripts. Oracle Database Packages Learn how to define Packages in projects for Oracle Database. See how to define and visualize packages in ER diagrams in Luna Modeler. Other objects in Oracle Database Learn how to define other objects like functions, triggers, synonyms, types and other Oracle-specific objects in Luna Modeler. Oracle Database Sequences Learn how to define Sequences in projects for Oracle Database. See how to define and visualize sequences in ER diagrams in Luna Modeler. Themes in Luna Modeler Learn about the various themes in Luna Modeler and how they can instantly improve the look of your diagrams and user interface. Database Schema Assignment Explore the features of Schema Assignment in Luna Modeler. Assign, remove, or replace schemas effortlessly for your objects. What is a Data Model? Three Main Types Explained Learn about data models and their key types - conceptual, logical, and physical. Discover powerful tools for the easy creation of data models. Setting Default Values for Columns in SQL Server Learn how to set default values for columns to your SQL Server database design. Explore Luna Modeler database design tool. Documenting Databases Using ER Diagrams Discover the importance of ER diagrams when documenting databases. This article describes various aspects of database documentation. Auto Layout in Moon Modeler Learn how the auto-layout function in Moon Modeler automatically arranges MongoDB diagram items for better readability and structure. Secure database connections - SSH/SSL/TLS Read how to create a new secure database connection, load the database structure and create an ER diagram from noSQL databases. Moon Modeler - Visual Schema Design Tool for noSQL Databases Visual database modeling for MongoDB, Mongoose ODM, DocumentDB and Cosmos DB. Design, generate, and document NoSQL schemas with ease. Luna Modeler - Database Design Tool for Relational Databases A data modeling tool that supports creation of ER diagrams for databases like Oracle, SQL Server, PostgreSQL, MariaDB and other RDBMS. Generating Schema Synchronization Scripts Learn how to compare a project created in Luna Modeler with an existing Oracle Database and how to generate schema synchronization scripts. Generating Schema Synchronization Scripts Learn how to compare a project created in Luna Modeler with an existing Oracle Database and how to generate schema synchronization scripts. Version Control & Explorer Track and manage different versions of your ER diagrams directly in Luna Modeler using the built-in Version Control Explorer. Layout - for an Easy Arrangement of Diagram Items Learn how the Layout function in Luna Modeler enables an easy arrangement of diagram items for better readability and structure. Dependencies in Data Models Discover how to create and manage dependencies in data models with Luna Modeler for comprehensive data visualization. Generating Alter Scripts for MySQL Learn how to compare MySQL schema and generate alter scripts for changes detected by Luna Modeler - a database design tool. Generating Synchronization SQL Scripts for MariaDB Learn how to compare MariaDB schema and generate synchronization SQL scripts for changes detected by Luna Modeler - a database design tool. How to Compare SQL Database Schemas Discover how to effectively compare SQL database schemas using Luna Modeler. Our guide offers step-by-step instructions. Database connections Set up connections to PostgreSQL, MySQL, Oracle & SQL Server in Luna Modeler. Load the database schema and generate ER diagrams automatically. Visualization of existing PostgreSQL databases Connect to a PostgreSQL database and reverse engineer your existing database structures. Visualize databases and create ER diagrams. Designing a Sports Tournament Data Model for PostgreSQL Explore the data model sport tournaments with a structured PostgreSQL approach for managing teams and matches effectively. What is Database Modeling? Database modeling is an essential step in the database design process. Read more information and tips for using database modelling tools. Step-by-Step Guide: Creating an ER Diagram from Azure SQL Server Database Structure Creating ER diagrams is very easy in Luna Modeler. Learn how to create a connection to an Azure SQL Server database and how to create ERD. Generating MongoDB Schema Validation Scripts Generation of MongoDB schema validation scripts. Draw diagrams in Moon Modeler and generate MongoDB schema validation scripts. PostgreSQL database design Luna Modeler for PostgreSQL database design. See how to visually create ER diagrams for PostgreSQL and generate SQL Scripts PostgreSQL ER diagram - graphics Use Luna Modeler and visualize PostgreSQL tables, composite types and other objects in a PostgreSQL ER diagram. Enumerated type - Enum - PostgreSQL How to define enumerated types (enum) for PostgreSQL in Luna Modeler - ER diagram tool for PostgreSQL and other databases. Domains in PostgreSQL projects Read how to specify PostgreSQL domains in Luna Modeler, a database modeling tool for PostgreSQL and other databases. Generating SQL scripts for PostgreSQL Read how to easily generate SQL script for PostgreSQL in Luna Modeler. Draw ERD and generate SQL for PostgreSQL database designs. MariaDB database design Luna Modeler - a tool for MariaDB database design. See how to visually create database design for MariaDB and how to generate SQL scripts. Primary and foreign keys in MariaDB projects How to define primary keys, foreign keys and primary foreign keys in Luna Modeler, a tool for database design for MariaDB and other platforms MariaDB indexes How to create indexes in Luna Modeler - data modeling tool for MariaDB, PostgreSQL, SQL Server and other relational databases. MySQL database design Luna Modeler - a data modeling tool for MySQL database design. Learn how to draw ER diagrams and generate SQL scripts easily. Visualization of existing MariaDB databases Connect to a MariaDB database and reverse engineer your existing database structures. Visualize databases and create ER diagrams. Generating SQL script for MariaDB How to generate SQL scripts for MariaDB database design in Luna Modeler - a data modeling tool for MariaDB and other databases. Other database objects in MariaDB projects How to define other database objects like stored procedures, functions, triggers and other MariaDB specific objects in Luna Modeler Enum and Set in MariaDB projects Enum and Set datatypes defined for MariaDB in Luna Modeler - a data modeling tool for MariaDB, PostgreSQL and other databases. Relationships in ER diagrams for MariaDB Database modeling and relationships defined in Luna modeler - a tool for visual database modeling for MariaDB and other databases. Primary and foreign keys in MySQL projects How to define primary keys, foreign keys and primary foreign keys in Luna Modeler, a tool for database design for MySQL and other platforms Generating SQL script for MySQL How to generate SQL scripts for MySQL database design in Luna Modeler — a data modeling and ER diagram tool for MySQL and other databases. SQLite database design Luna Modeler - a tool for SQLite database design. See how to visually create database design for SQLite and generate SQL script. Import & Visualization of existing SQLite databases Import SQLite files and reverse engineer existing database structures. Visualize databases and create ER diagrams for your SQLite structures. GraphQL Schema Design Learn how to create a GraphQL schema design in Galaxy Modeler. See how to draw a diagram and display GraphQL structures easily. MongoDB ER diagram & Graphics ER Diagram tool for visualization of MongoDB database structures. See collections, fields, documents and references in MongoDB ER diagrams. Updating PostgreSQL projects Read how to create a new database connection and update your existing PostgreSQL ER Diagram created in Luna Modeler - a database design tool. Updating SQLite projects Read how update your existing SQLite entity relationship diagram created in Luna Modeler - a database modeling tool for relational databases. SSH or SSL/TLS database connections Connect to databases securely over SSH tunnels, SSL or TLS in Luna Modeler. Load schema structure and auto-generate ER diagrams. SSH or SSL/TLS database connections Read how to create a new secure database connection, load the database structure and create an ER diagram from relational and noSQL databases. SQL Server database design Luna Modeler for SQL Server database design. See how to visually create ER diagrams for SQL Server and generate SQL scripts. Updating SQL Server projects Read how to create a new database connection and update your existing SQL Server ER Diagram created in Luna Modeler - a database design tool. How to generate SQL script for SQL Server Read how to easily generate SQL script for SQL Server in Luna Modeler. Draw ERD and generate scripts for your SQL Server database designs. SQL Server indexes How to create indexes in Luna Modeler - data modeling tool for SQL Server and other relational databases like PostgreSQL, MySQL, MariaDB etc. Advanced Copy and Paste in Luna Modeler See how to copy and paste one or more tables or individual columns in your ERD. Find out how to work with dependencies in Luna Modeler. PostgreSQL Indexes How to create PostgreSQL indexes in Luna Modeler - data modeling tool for PostgreSQL and other relational and databases. Relationships in ER diagrams for PostgreSQL Learn how to define relationships in ER diagrams for PostgreSQL and find out how to use Luna modeler - a database modeling for PostgreSQL Composite types & PostgreSQL ER Diagram Learn how to define composite types for PostgreSQL in Luna Modeler - ER diagram tool for PostgreSQL and other databases. Other database objects in PostgreSQL Learn how to define other database objects like functions, triggers, views and other PostgreSQL-specific objects in Luna Modeler. Logical data model Learn how to use Luna Modeler for logical data model. See how to visually create ER diagrams and convert them to selected target platform. Deprecation Warning: Setting the TLS ServerName to an IP address is not permitted by RFC 6066 See how to solve the setting the TLS ServerName to an IP address is not permitted warning, modify the hosts file & make ERD from SQL Server. Updating MariaDB projects Read how to create a new database connection and update your existing MariaDB ER Diagram created in Luna Modeler - a database design tool. Updating MySQL projects Read how to create a new database connection and update your existing MySQL ER Diagram created in Luna Modeler - a database design tool. Visualization of existing Oracle Databases Connect to your Oracle Database, visualize the database structure and create ER diagrams automatically in Luna Modeler. Indexes in Oracle Database How to create indexes in Luna Modeler - a data modeling tool for Oracle Database and other relational databases. Relationships in ER diagrams for Oracle Database Learn how to define relationships in ER diagrams for Oracle Database and find out how to use Luna modeler - a database modeling for Oracle ER diagram - Graphics in projects for Oracle Database Use Luna Modeler and visualize Oracle tables, procedures, view, synonyms and other objects in ER diagrams for Oracle. Updating projects for Oracle Database Read how to create a new database connection and update your existing ER Diagram for Oracle Database created in Luna Modeler. Oracle Synonyms How to define synonyms in projects for Oracle Database. Learn how to define and visualize synonyms in ER diagrams in Luna Modeler. Oracle Database Types How to define Types in projects for Oracle Database. Learn how to define and visualize types in ER diagrams in Luna Modeler. How to Use the CREATE TABLE Statement in PostgreSQL to Create a New Table Learn how to use the CREATE TABLE statement in PostgreSQL database to create a new table and how to generate DDL scripts using Luna Modeler. How to Visualize SQL Server Express Database Learn how to create a connection to an SQL Server Express database and how to create ERD from existing database structure using Luna Modeler ER Diagram Tool Explore the features of Luna Modeler - ER Diagram tool. Learn how to generate an ERD from your database or how to create ERD from scratch. Conceptual data model Learn how to create a conceptual data model in Luna Modeler. Visually sketch entities and relationships before committing to a physical schema. Database Modeling for SQL Server Learn how database modeling for SQL Server database can help you manage data more effectively. Try Luna Modeler - a database modeling tool. Top 5 Benefits of Database Modeling Tools Learn the top 5 benefits of database modeling tools and find out how Luna Modeler can increase your productivity and save you money. What is Entity Relationship Diagram (ERD)? Entity relationship diagram describes the database structure. Basic elements are entities, attributes and relationships. Read more. How to Add an Identity Column to SQL Server Database Design Learn how to add an Identity column to your SQL Server database design in Luna Modeler database design tool. How to Create a Database Diagram? Learn how to easily create a database diagram using modeling tools. Explore benefits of database diagrams and find out best practices.
