OCP考試第4題
4. Which three components does the Scheduler use for managing tasks within the Oracle environment? (Choose three.)
排程器用哪三個元件管理oracle環境的任務？
A. a job
B. a program
C. a schedule
D. a PL/SQL procedure
10g之後，使用Scheduler 代替JOB。
schedule是定義job在什麼條件下啟用執行，條件分為：時間（Time-Base)和事件(Event-Base)。
program定義job每次執行的程式。
job就是整個過程。
答案：ABC
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