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MongoDB replica set Member states
In MongoDB each member of a replica set has a state so in this blog we can see about replica set member states & its explanation. MongoDB replica set has three types of states. Core states. Other states. Error states. Core states : In Core states has three members and all are eligible to vote…
MongoDB v4.2 Update Operators – Part II
Already we have seen that the Field Update Operators in previous blog. In this blog we can seen about Array and Bitwise Operators and it’s explanation. Array Update Operators : 1.) $ : To update the first element that matches the query condition. Syntax : { “<array.$>” : value } Explanation : The Array field…
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Arun kumar Rajendran Database blog 