define

# File activerecord/lib/active_record/schema.rb, line 49
    def define(info, &block) # :nodoc:
      instance_eval(&block)

      if info[:version].present?
        connection.schema_migration.create_table
        connection.assume_migrated_upto_version(info[:version])
      end

      ActiveRecord::InternalMetadata.create_table
      ActiveRecord::InternalMetadata[:environment] = connection.migration_context.current_environment
    end