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I need this within 20 minutes please!! Will gladly upvote!! Briefly describe the problems regarding data redundancy and concurrency in older methods of data storage

I need this within 20 minutes please!! Will gladly upvote!!

Briefly describe the problems regarding data redundancy and concurrency in older methods of data storage (such as in flat-file data bases). Also describe how a relational database eliminates redundancy and concurrency problems. Why does data need to be scrubbed?

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