b. Update the salary of the employee whose name is JB by adding 800 to its...

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b. Update the salary of the employee whose name is "JB" by adding 800 to its current value. (No hardcoded new value. Hint: use $inc) c. Add a new field phone to document with name "RS" and set phone value as "6145555555". (Hint: use $set) b. Update the salary of the employee whose name is "JB" by adding 800 to its current value. (No hardcoded new value. Hint: use $inc) c. Add a new field phone to document with name "RS" and set phone value as "6145555555". (Hint: use $set)