instance method foreign_keys

# File activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb, line 309
      def foreign_keys(table_name)
        fk_info = exec_query("PRAGMA foreign_key_list(#{quote(table_name)})", "SCHEMA")
        fk_info.map do |row|
          options = {
            column: row["from"],
            primary_key: row["to"],
            on_delete: extract_foreign_key_action(row["on_delete"]),
            on_update: extract_foreign_key_action(row["on_update"])
          }
          ForeignKeyDefinition.new(table_name, row["table"], options)
        end
      end