{
  "name": "database name",
  "tables": [
    {
      "name": "table name",
      "comment": "table comment",
      "engine": "InnoDB",
      "collation": "utf8_general_ci",
      "row_format": "COMPACT",
      "columns": [
        {
          "name": "id",
          "type": "int",
          "length": 10,
          "precision": 0,
          "scale": 0,
          "default": 0,
          "pk": true,
          "unsigned": true,
          "autoincrement": true,
          "notnull": true,
          "zerofill": false,
          "comment": "column comments"
        }
      ],
      "indexes": [
        {
          "name": "index name",
          "type": "unique",  // index, unique
          "columns": [
              "id"
          ]
        }
      ]
    }
  ]
}