{
  "old": {
    "Role": {
      "tableName": "Roles",
      "columns": {
        "id": { "columnName": "id", "type": "int", "primaryKey": true, "autoIncrement": true },
        "name": { "columnName": "name", "type": "string", "length": 50, "unique": true }
      },
      "primaryKey": {
        "name": "PK_Roles",
        "columns": [ "id" ]
      },
      "indexes": [
        { 
          "name": "IDX_Roles_name",
          "columns": { "name": "DESC" }
        }
      ]
    }
  },

  "new": {
    "Role": {
      "tableName": "Roles",
      "columns": {
        "id": { "columnName": "id", "type": "int", "primaryKey": true, "autoIncrement": true },
        "name": { "columnName": "name", "type": "string", "length": 50, "unique": true },
        "permission": { "columnName": "permission", "type": "string" }
      },
      "primaryKey": {
        "name": "PK_Roles",
        "columns": [ "id" ]
      },
      "indexes": [
        { 
          "name": "IDX_Roles_name",
          "columns": { "name": "DESC" }
        }
      ]
    }
  }
}