open:firebase [EL]

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# Firebase

- [[firebase_auth]]

- [Firebase-로-웹사이트-개발하기-소개-장단점-1편](http://aerosky.tistory.com/entry/Firebase-%EB%A1%9C-%EC%9B%B9%EC%82%AC%EC%9D%B4%ED%8A%B8-%EA%B0%9C%EB%B0%9C%ED%95%98%EA%B8%B0-%EC%86%8C%EA%B0%9C-%EC%9E%A5%EB%8B%A8%EC%A0%90-1%ED%8E%B8)
- [구글 Firebase - 실시간 웹 서버 구축하기](http://blog.naver.com/PostView.nhn?blogId=sogangori&logNo=220724117841&parentCategoryNo=6&categoryNo=&viewDate=&isShowPopularPosts=true&from=search)


### Realtime Database 규칙
```
{
  "rules": {
    ".read": true,
    ".write": true,
    "2016" : {
      "site-moa" : {
        "shop-overseas" : {
      		".indexOn" : "dateFormat"
        },
        "shop-korea" : {
      		".indexOn" : "dateFormat"
        }
      }
    }
  }
}
```

rules에 모두 읽고 쓸 수 있도록 true를 설정한다. 

인덱스 설정을 위해, `.indexOn`를 입력한다.




### Understand Firebase Realtime Database Rules [more](https://firebase.google.com/docs/database/security/#section-overview)

|Rule Types| Desc|
|---|---|
|.read |Describes if and when data is allowed to be read by users.|
|.write |Describes if and when data is allowed to be written.|
|.validate|Defines what a correctly formatted value will look like, whether it has child attributes, and the data type.|
|.indexOn|Specifies a child to index to support ordering and querying.|