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Create a trigger named trg_cust_balance that will automatically update theac_customer table’s cus_balance before a new charter row is added. usethe charter table’s char_tot_chg as the update source (assume that all chartercharges are charged to the customer balance.) in addition to the char_tot_chg, add$25 for every quart of oil

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Create a trigger named trg_cust_balance that will automatically update theac_customer table’s cus_ba...
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