aditya immadi

aditya immadi

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what is the use of primary and foriegn keys?

Jul 25 2016 3:40 AM
Hi All,
 
      i have confusing little here..what is the actual use of foriegn key an primary key relations .can we bind the date using this relation only...if we want records from both tables which contains PK andFK relation any way we use joins .then what is  actuall use of these. can any one explain me with real time example 

Answers (3)