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            8
        ],
        "table_names": [
            "course",
            "teacher",
            "course arrange"
        ],
        "table_names_original": [
            "course",
            "teacher",
            "course_arrange"
        ]
    },
      {
        "column_names": [
            [
                -1,
                "*"
            ],
            [
                0,
                "conductor id"
            ],
            [
                0,
                "name"
            ],
            [
                0,
                "age"
            ],
            [
                0,
                "nationality"
            ],
            [
                0,
                "year of work"
            ],
            [
                1,
                "orchestra id"
            ],
            [
                1,
                "orchestra"
            ],
            [
                1,
                "conductor id"
            ],
            [
                1,
                "record company"
            ],
            [
                1,
                "year of founded"
            ],
            [
                1,
                "major record format"
            ],
            [
                2,
                "performance id"
            ],
            [
                2,
                "orchestra id"
            ],
            [
                2,
                "type"
            ],
            [
                2,
                "date"
            ],
            [
                2,
                "official ratings (millions)"
            ],
            [
                2,
                "weekly rank"
            ],
            [
                2,
                "share"
            ],
            [
                3,
                "show id"
            ],
            [
                3,
                "performance id"
            ],
            [
                3,
                "if first show"
            ],
            [
                3,
                "result"
            ],
            [
                3,
                "attendance"
            ]
        ],
        "column_names_original": [
            [
                -1,
                "*"
            ],
            [
                0,
                "Conductor_ID"
            ],
            [
                0,
                "Name"
            ],
            [
                0,
                "Age"
            ],
            [
                0,
                "Nationality"
            ],
            [
                0,
                "Year_of_Work"
            ],
            [
                1,
                "Orchestra_ID"
            ],
            [
                1,
                "Orchestra"
            ],
            [
                1,
                "Conductor_ID"
            ],
            [
                1,
                "Record_Company"
            ],
            [
                1,
                "Year_of_Founded"
            ],
            [
                1,
                "Major_Record_Format"
            ],
            [
                2,
                "Performance_ID"
            ],
            [
                2,
                "Orchestra_ID"
            ],
            [
                2,
                "Type"
            ],
            [
                2,
                "Date"
            ],
            [
                2,
                "Official_ratings_(millions)"
            ],
            [
                2,
                "Weekly_rank"
            ],
            [
                2,
                "Share"
            ],
            [
                3,
                "Show_ID"
            ],
            [
                3,
                "Performance_ID"
            ],
            [
                3,
                "If_first_show"
            ],
            [
                3,
                "Result"
            ],
            [
                3,
                "Attendance"
            ]
        ],
        "column_types": [
            "text",
            "number",
            "text",
            "number",
            "text",
            "number",
            "number",
            "text",
            "number",
            "text",
            "number",
            "text",
            "number",
            "number",
            "text",
            "text",
            "number",
            "text",
            "text",
            "number",
            "number",
            "others",
            "text",
            "number"
        ],
        "db_id": "orchestra",
        "foreign_keys": [
            [
                8,
                1
            ],
            [
                13,
                6
            ],
            [
                20,
                12
            ]
        ],
        "primary_keys": [
            1,
            6,
            12
        ],
        "table_names": [
            "conductor",
            "orchestra",
            "performance",
            "show"
        ],
        "table_names_original": [
            "conductor",
            "orchestra",
            "performance",
            "show"
        ]
    },
        {
            "column_names": [
                [
                    -1,
                    "*"
                ],
                [
                    0,
                    "area code"
                ],
                [
                    0,
                    "state"
                ],
                [
                    1,
                    "contestant name"
                ],
                [
                    1,
                    "contestant number"
                ],
                [
                    2,
                    "area code"
                ],
                [
                    2,
                    "contestant number"
                ],
                [
                    2,
                    "created"
                ],
                [
                    2,
                    "phone number"
                ],
                [
                    2,
                    "vote id"
                ],
                [
                    2,
                    "ref area code"
                ],
                [
                    2,
                    "ref contestant number"
                ]
            ],
            "column_names_original": [
                [
                    -1,
                    "*"
                ],
                [
                    0,
                    "area_code"
                ],
                [
                    0,
                    "state"
                ],
                [
                    1,
                    "contestant_name"
                ],
                [
                    1,
                    "contestant_number"
                ],
                [
                    2,
                    "area_code"
                ],
                [
                    2,
                    "contestant_number"
                ],
                [
                    2,
                    "created"
                ],
                [
                    2,
                    "phone_number"
                ],
                [
                    2,
                    "vote_id"
                ],
                [
                    2,
                    "ref-area_code"
                ],
                [
                    2,
                    "ref-contestant_number"
                ]
            ],
            "column_types": [
                "text",
                "number",
                "text",
                "text",
                "number",
                "number",
                "number",
                "time",
                "text",
                "number",
                "text",
                "text"
            ],
            "db_id": "voter_1",
            "foreign_keys": [
                [
                    5,
                    1
                ],
                [
                    6,
                    4
                ]
            ],
            "primary_keys": [],
            "table_names": [
                "area code state",
                "contestants",
                "votes"
            ],
            "table_names_original": [
                "area_code_state",
                "contestants",
                "votes"
            ]
        }
  ]