dbdiagram.io dbml generator for MSSQL

Originally forked from david-zoltan/dbdiagramio-mssql

This app allows you to generate dbml code for dbdiagram.io from your MS SQL database.

Installation

• Download DbDiagramIo.CLI.zip from releases and extract it.
• Run DbDiagramIo.CLI.exe with at least --connection-string argument.

Usage

Available arguments:

  -v, --verbosity            (Default: Information) Sets the serilog log level.

  -c, --connection-string    Required. The connection string to the database.

  --exclude-schemas          The schemas to exclude from the dbml output. You can use LIKE syntax here.

  --exclude-tables           The schemas to exclude from the dbml output. You can use LIKE syntax here e.g. 'AspNet%' to
                             exclude all tables starting with 'AspNet'.

  -o, --output-file          The file to write the dbml output to. If not provided, the output will be written to the
                             console.

  --help                     Display this help screen.

  --version                  Display version information.

Example

.\DbDiagramIo.CLI.exe -c "Server=.;Database=MyDatabase;Integrated Security=true;" --exclude-schemas "Hangfire;serilog" --exclude-tables "AspNet%" -o "D:\Root\dbml.txt" -v 1

The repository

• DbDiagramIo.CLI: Command line tool to export MS SQL database schema into a script that can be imported into dbdiagram.io
• DbDiagramIo.MsSql: Library to export MS SQL database schema into a script that dbdiagram.io understands.
• Example.DotNetCore: .NET Core example application that actually creates the dbdiagram.ioscript by using the library.

Try it

• cd src and open the .sln file with Visual Studio
• set the connection string in Example.DotNetCore\Program.cs to point to your database
• build the solution using Visual Studio
• run the application using dotnet Example.DotNetCore.dll
• copy&paste the application's output to https://dbdiagram.io/d
• see your database's diagram

Create your own application

Use the DbDiagramIo.MsSql library in your code and create a better MS SQL => dbdiagram.io export tool.

Add the nuget package

dotnet add package DbDiagramIo.MsSql

Import the namespace

using DbDbiagramIo.MsSql;

Generate dbdiagram.io script

(TableDto[] tables, ForeignKeyDto[] foreignKeys) = MsSqlSchemaReader.ReadTablesAndForeignKeysFromDb( "<YOUR-DB'S-CONNECTIONSTRING>" );

foreach (TableDto table in tables)
{
    Console.WriteLine( table.ToDbDbiagramCode() );
}

foreach (ForeignKeyDto fk in foreignKeys)
{
    Console.WriteLine( fk.ToDbDiagramDto() );
}

Why

SQL Server Management Studio 18 no longer supports diagrams. dbdiagram.io is a free tool to draw DB diagrams, however currently it does not have an "import from ms sql" feature. This project provided a quick & dirty way for me to generate DB diagrams for my MS SQL databases.

Edit 25.1.2024 (Tomas Bouda) - Curently there is mssql import option in dbdiagram.io but it was not working for me + I needed to filter out some tables/schemas automatically.

License

Copyright (c) 2019 David Zoltan, Tomas Bouda. Licensed under the MIT license.