Question

while designing tables what are the precaution that are taken to ensure that the same information is not stored in more than one place. What is the advantage of doing this?​

Answer 1

Explanation:

you can use the microsoft acess application

in this application once the data written in the table it cannot be repeated it's the rule you have to keep a primary key that is for example every student had a unique I'd for every organisation

keep I'd row as primary key then for every student can have a unique information .The advantage of the primary key is that all the information is unique and it avoids the confusion

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