Hi Esteban, we noticed the same "copy reuse" issue with NBSQlite. See this thread: http://forum.world.st/Garage-and-SQLite-file-databases-general-project-struc... which ended up in a different discussion on URLs. I did not really understood but had not time to look deeper and reproduce Guilles arguments clearly. Thanks T.  Gesendet: Montag, 12. Oktober 2015 um 16:57 Uhr Von: "Esteban A. Maringolo" <emaringolo@gmail.com> An: "Pharo Developers" <pharo-dev@lists.pharo.org> Betreff: [Pharo-dev] Relation between Garage PG and PGv2 Hi all, and Guille Polito in particular,  I'm loading the Garage classes into Pharo 4, and I see the Garage-Postgres package "duplicates" the classes of the PostgresV2 package, but instead of using the PG prefix, it uses the GA prefix. This is in particular with the case of Garage-Postgres-Protocol package.  Why is it so?  Because even GAConnection>>#buildDefaultConnectionArgs (which is a replica of PGConnection) references PGConnectionArgs instead of GAConnectionArgs, which is the replica of the first.  QUESTION: Isn't Garage a "common API" for the *existing* drivers? (like a common wrapper), and if so it delegates the protocol handling to the real driver? In the PostgresV2 package in this case, to PG prefixed classes.  Regards!   Esteban A. Maringolo