What’s new in Moon Modeler version 4.1

Moon Modeler version 4.1 released! Let’s start with the new features:

1. Improved MongoDB connection settings

In this version we have modified the options for connecting to the MongoDB database. We have updated the connection method so that connecting to e.g. MongoDB Atlas should be very easy and convenient.

Version 4.1 improvements

To connect to the MongoDB database you may need to set up authentication.… Read the rest

Crow’s foot notation in ER diagram

Use crows foot notation to represent relationships between entities in an entity relational diagram. Entities are connected by lines, and symbols at the beginning or end of the line describe cardinality.

Relationship types and cardinality:

Symbols in crow’s foot notation

A crow’s foot graphics represents “many” or “infinite”.… Read the rest

MongoDB ER diagram graphics

Settings for MongoDB ER diagram graphics can be defined on two levels in Moon Modeler. On a project level and on a selected object level.

Project graphics

Click the MongoDB ER diagram area to make sure no object is selected. Then change the colors in section Graphics. Alternatively, edit Project properties and specify settings on tab Graphics of the modal form.… Read the rest

NoSQL data modeling

Data modeling is the process of visually creating a graphical representation of a system or database. In the case of relational databases, we can mention the creation of entity-relational diagrams in which entities, attributes and relationships between entities are displayed. (Read more information about ER diagrams).

Advantages of data modeling

  • Fewer design and development errors
  • Easy and fast design, especially in the early stages of development
  • Better communication between team members
  • Time saving
  • Lower development costs
  • and many others

MongoDB schema design and noSQL database modeling

But what is the advantage of data modeling when we talk about noSQL databases?… Read the rest

What is Entity Relationship Diagram (ERD)?

Entity relationship diagram describes the structure of the database. The entity relationship diagram shows entities (tables in relational databases) and relationships between tables that exist in the database. For a good database design, it is very important to have an entity relationship diagram.

In an entity relationship diagram, the basic elements are:

  • Entities (tables)
  • Attributes (table columns)
  • Relationships (relationships between tables)

Why create entity relational diagrams?

Read the rest

Compare editions

Moon Modeler is available in two editions, Basic and Professional.

Moon Modeler FeaturesBasicProfessional
Supported platforms
MongoDBYes Yes
Mongoose Yes Yes
PostgreSQL Yes Yes
MariaDB Yes Yes
MySQL Yes Yes
SQLite Yes Yes
GraphQL Yes Yes
Data modeling
ER diagrams and visual schema design Yes Yes
Support for platform specific objects Yes Yes
Visualization of nested/embedded objects Yes Yes
Automatic creation of foreign keys Yes Yes
Default values for a project Yes Yes
Custom data types for a project Yes Yes
User interface
Dark and light theme Yes Yes
Custom colors for items on ER diagrams Yes Yes
Undo Yes Yes
Find an object Yes Yes
Objects filtering Yes Yes
Automatic object resizing Yes Yes
Multiple objects alignment and resizing Yes Yes
Multiple line modes Yes Yes
Multiple display modes Yes Yes
Optional display of embedded objects on diagram Yes Yes
Optional display of database/schema name Yes Yes
Autolayouts Yes Yes
Zoom Yes Yes
Subdiagrams
Subdiagrams for objects in a subject area Yes
Subdiagram creation for schema/database Yes
Code generating
Generating project script Yes Yes
Generating subdiagram script Yes
Settings for output formatting (relational databases) Yes Yes
Order items (relational databases) Yes Yes
Reporting
Export to PDF Yes Yes
Export subdiagram to PDF Yes
Interactive HTML reports Yes
Multiple styles for HTML reports Yes
Visualization of existing structures
Basic database connections & reverse engineering Yes Yes
Secure SSH connection & reverse engineering Yes
Secure SSL/TLS connection & reverse engineering Yes
Import from SQLite files Yes Yes
Import from GraphQL files Yes Yes
Pricing
List price99 USD149 USD

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One-to-one relationships

One to many relationship is a type of cardinality that refers to a relationship between two entities in an entity relational diagram (between two tables in a database). A simple example would be a binding between the entities person and birth_certificate. Each person must have their own birth certificate.

Graphically, the one to one relationship is shown as follows:

one-to-one relationship

One-to-one relationships in Moon Modeler

How it works in version 4.2:

Every time you create a new relationship between tables, a one-to-many relationship is created.… Read the rest