# PostgreSQL

Canonical: https://gaboesquivel.com/tech/postgresql

**Technology:** PostgreSQL

Relational database supporting trading applications, blockchain indexers, exchanges, and realtime application data.

## Project evidence

- [Bitlauncher](https://gaboesquivel.com/project/bitlauncher) (2023)
- [Opyn](https://gaboesquivel.com/project/opyn) (2024)
- [Bitcash](https://gaboesquivel.com/project/bitcashbank) (2020)
- [ChainGraph](https://gaboesquivel.com/project/chaingraph) (2020)

## Implementation

- Stored and queried Bitlauncher's auction and transaction data through Supabase.
- Integrated Ponder and PostgreSQL for Opyn Markets' indexed trading data.
- Built Bitcash's exchange and EOS indexing infrastructure with PostgreSQL and Hasura.
- Used PostgreSQL for ChainGraph's indexed blockchain data and GraphQL queries.