According to the docs, it “uses Postgres Table Access Method (TAM) to provide a pluggable storage engine for PostgreSQL. […] Pluggable Storage gives developers the ability to use different storage engines for different tables within the same database. Developers will be able to choose a storage method that is optimized for their specific needs: some tables could be configured for high transactional loads, others for analytics workloads, and still others for archiving.”
According to the docs, it “uses Postgres Table Access Method (TAM) to provide a pluggable storage engine for PostgreSQL. […] Pluggable Storage gives developers the ability to use different storage engines for different tables within the same database. Developers will be able to choose a storage method that is optimized for their specific needs: some tables could be configured for high transactional loads, others for analytics workloads, and still others for archiving.”
https://www.orioledb.com/docs