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title: Mongodb command
tags: Mongodb
description: Mongodb comman record
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# Mongodb 使用 command 紀錄

## mongodn installation

$ apt-get install mongodb

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## start monogdb service

$ service mongodb start

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## Enter mongodb
進入mongodb的shell

$ mongo

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## create database
在mongodb的資料表建立database

$ use AI_ENGINE

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## create collection
在mongodb的資料表建立collection

$ db.createCollection("user_profile")

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## show collections
顯示所有已建立的collections

$ show collections

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## insert document data
在collections裡插入一筆數據

$ db.user_profile.insert({"account": "shaung08", "password":"456789"})

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## find document data
尋找collections裡的所有documnet

$ db.user_profile.find()

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## update document data
更新document的指定數據

$ db.user_profile.update( { "account": "30" },{ $set : { "username":"shaung08"} })

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## delete document data
刪除document裡的指定數據

$ db.user_profile.update({"account": "30"}, {$unset: {"account": "30"}})

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## delete one document
刪除一筆document

$ db.user_config.deleteOne({"_id" : ObjectId("60efa74a20fb5161e9365d47")})

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## delete all document correspond to {"model" : "yolov5s"}
刪除document裡與{"model" : "yolov5s"}相符的資料

$ db.user_config.deleteMany({"model" : "yolov5s"})

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## Thank you! :dash:

You can find me on
- GitHub: https://github.com/shaung08
- Email: [e-mail]