Database schema visualizer

Database Schema Visualizer

Turn SQL CREATE TABLE statements into an entity-relationship diagram. Explore tables, columns, constraints, and foreign keys — then export Mermaid for documentation.

ER diagram from CREATE TABLEVisualize foreign key linksMySQL & PostgreSQL schema SQLExport Mermaid ER diagram

Schema SQL

Paste `CREATE TABLE` statements. Parsing and rendering happen locally in your browser.

4 tables4 relationships

ER diagram

teams

idINT

nameVARCHAR(120)

created_atTIMESTAMP

users

idINT

team_idINT

emailVARCHAR(255)

UQNN

full_nameVARCHAR(120)

is_activeBOOLEAN DEFAULT

projects

idINT

team_idINT

nameVARCHAR(160)

statusVARCHAR(40)

tasks

idINT

project_idINT

assignee_idINT

titleVARCHAR(200)

due_dateDATE

Mermaid export

Use in docs, Notion, GitHub, or Mermaid-compatible tools

erDiagram
  users ||--o{ teams : references
  projects ||--o{ teams : references
  tasks ||--o{ projects : references
  tasks ||--o{ users : references
  teams {
    int id "PK"
    varchar_120_ name "NN"
    timestamp created_at
  }
  users {
    int id "PK"
    int team_id
    varchar_255_ email "UK,NN"
    varchar_120_ full_name
    boolean_default is_active
  }
  projects {
    int id "PK"
    int team_id "NN"
    varchar_160_ name "NN"
    varchar_40_ status
  }
  tasks {
    int id "PK"
    int project_id "NN"
    int assignee_id
    varchar_200_ title "NN"
    date due_date
  }

Paste CREATE TABLE SQL

Add one or more CREATE TABLE statements with columns, primary keys, and foreign keys.

View ER diagram

See tables, column types, constraints, and relationship lines in a browser-rendered diagram.

Export Mermaid

Copy a Mermaid ER diagram for docs, GitHub README files, or internal architecture notes.

Why teams visualize database schemas

Runs locally in the browser — schema SQL is not uploaded for visualization
Highlights primary keys, unique columns, and NOT NULL constraints
Draws foreign-key relationships between related tables
Useful for onboarding, schema reviews, migration planning, and SEO-facing developer tooling

SQL mock data CSV to SQL

Need live schema browsing on production data?

This tool is for SQL you paste locally. Silent Dock connects to existing MySQL, PostgreSQL, and MongoDB environments with secure tunneling, schema views, query workflows, and governed operational access.

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Database schema visualizer FAQ

What SQL does the database schema visualizer support?

The parser is optimized for common CREATE TABLE syntax used in MySQL, PostgreSQL, and SQLite, including inline and table-level FOREIGN KEY constraints.

Can I export the diagram?

Yes. The tool generates a Mermaid ER diagram you can copy into documentation platforms, and you can download the source SQL at any time.

Does this connect to my live database?

No. It visualizes SQL you paste into the tool. For live schema browsing on production MySQL, PostgreSQL, or MongoDB, Silent Dock provides secure admin and schema workflows through a tunnel.