Worked on the laravel/framework repository to enhance database compatibility and reliability, focusing on legacy PostgreSQL support. Addressed a bug where schema generation could fail on PostgreSQL versions prior to 9.1 by implementing a version-gated adjustment in the schema grammar, ensuring the 'pg_collation' catalog is only queried on supported servers. Used PHP and SQL to deliver this targeted fix, and added a regression test to validate correct behavior on older database versions. This backend development effort improved framework stability for users running legacy systems, reducing runtime errors and support incidents while maintaining robust compatibility across diverse PostgreSQL environments.