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?
Given two tables and a query that joins them, design an optimal index strategy
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how many ip are used in while configuring SQL cluster
The Verbal and Numerical reasoning tests that are to be completed online. In particular the numerical one. Warning: Do not attempt this until you have practiced! It's not easy if you are not very fluent in mathematics. You will most certainly need to brush up on your gcse/alevel maths and be prepared to be tested under a strict time limit.
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Write a bulk collect with exception handling
what is surrogate key, explain scd type 2 informatica, how to improve query performance in sql, explain your projects, how to find duplicates, how to delete duplicates, joins in sql, difference between lookup and joiner, which one is faster, types of lookup
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