NOISE DBML

Visual Studio Code extension for previewing DBML (Database Markup Language) relational diagrams.

Features

• Interactive Preview: Pan, zoom, and drag tables.
• Theme Support: Automatically adapts to VS Code color themes.
• Layout Persistence: Saves your diagram layout and positions.

Syntax Guide

Groups

You can group related tables using the TableGroup syntax. Groups are visualized with a colored background.

TableGroup user_management {
  users
  follows
  // You can add a color or note
  note: "Core user tables"
}

Allowed Syntax

The following syntax is fully supported and recommended for defining tables and relationships:

Table follows {
  following_user_id integer
  followed_user_id integer
  created_at timestamp
}

Table users {
  id integer [primary key]
  username varchar
  role varchar
  created_at timestamp
}

Table posts {
  id integer [primary key]
  title varchar
  body text [note: 'Content of the post']
  user_id integer [not null]
  status varchar
  created_at timestamp
}

Ref user_posts: posts.user_id > users.id // many-to-one

Ref: users.id <> follows.following_user_id

Ref: users.id <> follows.followed_user_id

Not Allowed / Unsupported Syntax

The following DBML features are currently not supported or will not be rendered in the diagram:

• Enums: Enum definitions are parsed but not currently visualized.
• Project Information: Project blocks are ignored.
• Complex Reference Settings: While parsed, settings like [delete: cascade] or [update: no action] are only visible in tooltips and do not change the line style.

Support

Report issues and request features through the GitHub repository.