Here we are learning about NESTED TABLE, Collection in PL SQL. Hope the concept and example would be clear to you.
For any confusion or doubt, let me know in comment box.
Link (Introduction to Collection in PL SQL || Nested Tables || VARRAYs || Associative Arrays) :
Link (User Defined Exception || RAISE_APPLICATIN_ERROR || SQLERRM) :
Link (Application from where you can get all code detail and example) :
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