MongoDB Configuration and basic usage

MongoDB Installation

Official website: https://www.mongodb.com/

Brochure: https://docs.mongodb.org/manual/

Win7 system needs to install patches, KB2731284

• Setup finishes configuring environment variables:
• C:\Program Files\mongodb\server\3.0\bin added to the system's PATH environment variable

Basic commands

• Gongod: Boot
• Mongoimport Importing Data
• MONGO use the database, the environment after running this command is MONGO syntax.
• Show DBS: List all databases
• Use database name: using a database
• DB: View your current database

Note: If you use a database that does not exist, it is new, but only after you execute the INSERT Data statement can you create a new success.

Use of the database

To manage the database, you must turn on the boot, use the mongod--dbpath c:\mongom Command (--dbpath is the folder where the database document is selected)

1. Inserting data

• Normal insertion

  db.student.insert({"name":"xiaoming"});

• Import data

  /**/--db test--collection restaurants--drop--file Primer-dataset.json

2. Querying data

• Search All

  db.restaurants.find()

• Exact match

  db.student.find({"score.shuxue":80});

• Multiple conditions

  db.student.find({"score.shuxue":80 , "age":22})

• Greater than condition

  db.student.find({"score.yuwen":{$gt:60}});

• Or

  db.student.find({$or:[{"age":18},{"age":22}]});

• Sort

  db.restaurants.find().sort( { "borough": 1, "address.zipcode": 1 } )

3. Modify the data

• Single Data modification

  db.student.update({"name":"小明"},{$set:{"age":22}});

• Change multiple matching data (plus multi parameter)

  db.student.update({"score.shuxue":80},{$set:{"age":26}},{multi: true});

• Complete replacement (without $set keyword)

  db.student.update({"name":"小明"},{"name":"大明","age":28});

4. Delete data

• db.restaurants.remove( { "borough": "Manhattan" } )

MongoDB Configuration and basic usage