DBA Oracle/SQL Server/MongoDB applicants have rated the interview process at Cognizant with 4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 77.5% positive. This is according to Glassdoor user ratings.
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Interview questions [1]
Question 1
How do you insert a document into a collection? Explain how to update a document in MongoDB. What is the $set operator used for in MongoDB updates? How do you delete documents in MongoDB? Explain the purpose of the find method in MongoDB. What is the significance of the _id field in a MongoDB document? How do you perform a case-insensitive search in MongoDB?