衣食父母(2020/1/16)

过了一遍mongo基础🤣🤣🤣

终端

1. 增db.collection.insert();db.collection.save();
2. 删db.collection.remove();
3. 改db.collection.update();
4. 查db.collection.find();
5. 文档中字段的个数,db.document.count();
6. 穿件角色,db.createUser({user:'zhukai',pwd:'123456',roles:['read',{db:'third',role:'readWrite'}]});
7. 启动数据库服务, mongod
8. 终端连接数据库,mongo
9. 关闭数据库服务,use admin;db.shutdownServer();

node端 testMongo.js

const db = connect('second');
db.users.insert({id:1,name:'second'});

mongo testMongo.js