1A)use Krish drop.database() 1B)show dbs use Krish db.createcollection("emp") db.createcollection("emp1") show collections db.emp.drop() show collections 1C)use Krish db.createcollection("emp") db.emp.insertMany([{"Name":"Krish","Age":20,"email_id":"krish123@gmail.com"},{"Name":"Trish","Age":21,"email_id":"trish123@gmail.com"},{"Name":"Hrish","Age":22,"email_id":"hrish123@gmail.com"},{"Name":"Vrish","Age":23,"email_id":"vrish123@gmail.com"}]) db.emp.find() db.emp.updateOne({Name:"Krish"},{$set:{Age:24}) db.emp.deleteOne({Name:"Trish"}) Or use Krish db.createCollection("emp") db.emp.insertMany([ { "Name": "Krish", "Age": 20, "email_id": "krish123@gmail.com" }, { "Name...
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