Basic Mongodb commands

Basic Mongodb commands with example

Create collection (Tables) (there is no create table command. 1st insert command will create table(collection)

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db. student. insert({name:"sadakar",state:"telangana",city:"hyderabad"});

To display the data from collection

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 db.student.find()

 db.student.find().pretty()

To display the data in array format (Case sensitive)

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db.student.find().toArray();

update

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1)full document update i.e replace the document.

2)partial update i.e, update record.

t.update({_id:100},{"_id":100,x:hello world",y:123})

 ** id is the one of the key value and you cannot update the id value.

Remove

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db.test.remove({_id:100})

db.users.remove({ "addr.city": "Lyon", registered: false })