CouchDB简单入门

CouchDB

1.curl命令

RESTful

新增：POST请求
修改：PUT请求
删除：DELETE请求
查找：GET请求

查看数据库有哪些

curl -X GET http://admin:123456@localhost:5984/_all_dbs

admin: 用户名

123456:改成自己密码

创建数据库

curl -X PUT http://admin:123456@localhost:5948/name

删除数据库

curl -X DELETE http://admin:123456@localhost:5948/name

### 2.图形化页面Fauxton

How to pronounce fauxton

可以使用以下网址与CouchDB Web界面进行交互：
http://127.0.0.1:5984/_utils

数据

{"_id": "unique-document-id-1","item": "basketball","prices": {   "京东": 55.00,"拼夕夕": 48.00,"淘宝": 50.00}
}{"_id": "unique-document-id-2","item": "volleyball","prices": {"京西": 40.00,"淘宝": 45.00,"并多多": 38.00}
}{"_id": "unique-document-id-3","item": "baseball","prices": {"淘宝": 25.00,"京东": 30.00,"拼多多": 22.00}
}
{"_id": "unique-document-id-4","item": "table","prices": {"淘宝": 200.00,"拼多多": 198.00}
}
{"_id": "unique-document-id-5","item": "apple","prices": {"唯品会": 5.00,"淘宝": 6.00,"小红书": 4.50}
}

点击Create Document建立文档
在这里插入图片描述

Map函数

doc
emit()

目的： 建立View，查看淘宝中各个商品的价格
点击New View
在这里插入图片描述

function (doc) {if (doc.item && doc.prices) for (var shop in doc.prices){if (shop === "淘宝") {var key = doc.itemvar price = doc.prices[shop]emit(key, price)}}
}