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Database of choice

Cascade uses Postgres as its database of choice. Postgres is a powerful, open source object-relational database system that uses and extends the SQL language combined with many features that safely store and scale the most complicated data workloads.

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ORM of choice

This section mentions something about Authentication
Cascade uses Prisma as its ORM of choice. Prisma is a modern database toolkit that makes database access easy with an auto-generated and type-safe query builder that’s tailored to your database schema. Prisma connects really well to Postgres & NextAuth trough an adapter that makes it easy to use. Whenever you want to make changes to database schema, you can do so by changing the schema in the schema.prisma file and then running npx prisma migrate dev to generate a migration file and apply the changes to the database.

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Database schema

Database has a few main overlapping sections, those are clearly visible in prisma schema(content of each model omitted fro brevity) User related: 
model Account {

    ...

}

model Session {

    ...

}

model User {

    ...

}
Payments & Subscriptions related: 
model LemonSqueezySubscription {

    ...

}

model OneTimePurchase {

    ...

}

model Plan {

    ...

}
Feature usage related: 
model FeatureUsage {

    ...

}