Engineering, 20.11.2019 22:31, adamgala3885

Implement a function invoicecheck with one input parameter (invoice number) to check if the invoice exists in your database. write a procedure invoicedetail with one input parameter (invoice number). in the procedure, call the function invoicecheck to check if the invoice exists, if yes, display the invoice_id, invoice_total and invoice_due_date for that invoice. if not, print out a message "invoice not in the database" from your procedure. (8 points)

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Implement a function invoicecheck with one input parameter (invoice number) to check if the invoice...