supabase-db

Row Level Security (RLS) in PostgreSQL enforces fine-grained access control on database tables. You configure RLS policies directly in your Supabase project to secure data access for multi-tenant applications, ensuring users only see their own data.

Real-time subscriptions let your JavaScript application receive live updates from database changes. You initialize the official supabase-js client with your project URL and anon key, then subscribe to database events to push live updates to your frontend.

Yes, edge functions run serverless workflows close to your users and integrate with other services. You use the supabase-js client alongside edge functions to handle logic and interact securely with your PostgreSQL database.

You need a configured Supabase project, the @supabase/supabase-js client installed, and proper environment configuration. Specifically, you must set your project URL and anon key to initialize the connection and start querying data.

Supabase provides a full PostgreSQL database with automatic REST and GraphQL APIs. This means you get instant, ready-to-use endpoints for your data without writing custom backend server code to expose your tables.

Supabase real-time subscriptions are ideal for applications requiring live updates, such as a multi-tenant dashboard with live charts. Instead of manually polling the database, subscriptions push changes instantly, reducing unnecessary network requests and latency.