This blog describes the porting of a medium-sized application (~250 kloc) from D7 to Lazarus. It uses PostgreSQL as database, and the connection is being ported from DB Express (D7) to SqlDB (Lazarus).
It's released, check the Release Notes. As a side note, I've found an interesting website called Fórum Lazarus e Freepascal with a bulletin board in portuguese.
