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)

diy

explanation:

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about

explanation:  

an electrode is a metal whose surface serves as the location where oxidation-reduction equilibrium is established between the metal and what is in the solution.