Supabase is an open source Firebase alternative. Start your project with a Postgres database, Authentication, instant APIs, Edge Functions, Realtime subscriptions, and Storage.

Supabase

if I use this strategy then should I store it as variable to access the database later through it

I suggest you a service locator like GitIt for services https://pub.dev/packages/get_it

But that's maybe to advanced. When you use `supabase_flutter`, just use `Supabase.instance` https://github.com/supabase-community/supabase-flutter/blob/main/lib/src/supabase.dart#L29