MSSQL
Bitwarden primarily stores data in MSSQL (Microsoft SQL Server). The data access layer in the Server is written using Dapper which is a lightweight object mapper for .NET.
Creating the database
See Server Setup Guide.
Updating the database
The dev/migrate.ps1 helper script uses our
MsSql Migrator Utility to
run migrations. You should run the helper script whenever you sync with the main branch or create
a new migration script. Migrations that have already been run are tracked in the Migration table
of your database.
Modifying the database
The process for modifying the database is described in Migrations.