Oracle
1Z0-144 · Question #27
1Z0-144 Question #27: Real Exam Question with Answer & Explanation
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Question
View Exhibit1 and examine the structure of the product table. View Exhiblt2 and examine the procedure you created. The procedure uses the prod id to determine whether the list price is within a given range. You then create the following trigger on the product table. CREATE OR REPLACE TRIGGER check_price__trg BEF0RE INSERT OR UPDATE OF prod_id, prod_list_price ON product FOR EACH ROW WHEN (nev.prod_id <> NVX(old.prod_id,0) OR New.prod__list_price <> NVL(old.prod_list_price, 0) ) BEGIN check_price (: new.prod_id) ; END / Examine the following update command for an existing row in the product table. SQL> UPDATE produce SET prod_list_price = 10 WHERE prod_id=115; Why does it generate an error?
Exhibits
Options
- ABecause the procedure call in the trigger is not valid
- BBecause the condition specified in the when clause is not valid
- CBecause both the procedure and trigger access the same table
- DBecause the WHEN clause cannot be used with a row-level trigger
- EBecause the column list specified with UPDATE in the trigger is not valid
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