{
  "Department": {
    "tableName": "Departments",
    "columns": {
      "id": { "columnName": "id", "type": "int", "primaryKey": true, "autoIncrement": true },
      "title": { "columnName": "title", "type": "string", "length": 50, "allowNull": false },
      "remark": { "columnName": "remark", "type": "string" }
    },
    "primaryKey": {
      "name": "PK_Departments",
      "columns": ["id"]
    }
  },
  "Role": {
    "tableName": "Roles",
    "columns": {
      "title": { "columnName": "name", "type": "string", "length": 50, "allowNull": false, "primaryKey": true }
    },
    "primaryKey": {
      "name": "PK_Roles",
      "columns": ["name"]
    }
  },
  "User": {
    "tableName": "Users",
    "columns": {
      "id": { "columnName": "id", "type": "int", "primaryKey": true, "autoIncrement": true },
      "nick": { "columnName": "name", "type": "string", "length": 50, "allowNull": false },
      "password": { "columnName": "password", "type": "string", "length": 40 },
      "departmentId": { "columnName": "departmentId", "type": "int" }
    },
    "primaryKey": {
      "name": "PK_Users",
      "columns": ["id"]
    },
    "indexes": [
      {
        "name": "IX_Users_nick",
        "columns": { "name": "ASC" },
        "unique": true
      }
    ],
    "foreignKeys": [
      {
        "name": "FK_Users_Departments",
        "columns": ["departmentId"],
        "refer": "Department",
        "onDelete": "SET NULL"
      }
    ]
  }
}