Required files
benchmark
date
bigdecimal
bigdecimal/util
active_record/connection_adapters/abstract/schema_definitions
active_record/connection_adapters/abstract/schema_statements
active_record/connection_adapters/abstract/database_statements
active_record/connection_adapters/abstract/quoting
active_record/connection_adapters/abstract/connection_specification
active_record/connection_adapters/abstract/query_cache