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[EDIT - added several public dataset sites]. First off, there is no real evidence that NoSQL databases are "better" at handling large datasets than traditional (OldSQL) RDBMSs. Check out Ted Dziuba's article about how he can't wait for NoSQL to die. He makes the point that Walmart continue to use RDBMSs - and they're not a small company! He says that NoSQL ...


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For mongo shell sessions there is a concept of mongorc files which include JavaScript to execute when the mongo shell starts. You can use this feature to extend or customise the behaviour of the interactive shell. If you want secondary reads to be allowed by default for all shell sessions you can either: add the rs.slaveOk() command to the .mongorc.js in ...



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