Required Files
- active_support
- rubygems
- active_record/base
- active_record/observer
- active_record/validations
- active_record/callbacks
- active_record/reflection
- active_record/associations
- active_record/aggregations
- active_record/transactions
- active_record/timestamp
- active_record/acts/list
- active_record/acts/tree
- active_record/acts/nested_set
- active_record/locking/optimistic
- active_record/locking/pessimistic
- active_record/migration
- active_record/schema
- active_record/calculations
- active_record/xml_serialization
- active_record/attribute_methods
- active_record/connection_adapters/
- active_record/query_cache
- active_record/schema_dumper