勝手にリレーショナル化してくれる { "documents": [ { "title": "SampleTitle1", "updated_at": "2018-09-10T05:22:26Z", “files": [ { "name": “SampleFile1-1", "language_code": “en" }, { "name": " SampleFile1-2", "language_code": "ja" } ] }, { "title": "SampleTitle2", "updated_at": "2018-09-05T05:22:26Z", “files": [ { "name": “SampleFile2-1, "language_code": "ja" }, { "name": “SampleFile2-2", "language_code": “en" } ] } ] } * title update_at 1 SampleTitle1 2018-09-10T05:22:26Z 2 SampleTitle2 2018-09-05T05:22:26Z * documents_id name language_code 1 1 SampleFile1-1 en 2 1 SampleFile1-2 ja 3 2 SampleFile2-1 ja 4 2 SampleFile2-2 en Files テーブル Documents テーブル 参考:http://bit.ly/CDataJson