单选题
Your business has departmental reports that are generated every day. Each department must use the same set of queries， but access a different subset of data in the tables， depending on which department generates the report. The format of the reports is being developed； currently， the format changes daily. How would you configure the database to ensure that each department generates its report （based on its target data） using the most recent report format every day？（）
发布日期：2020-04-10
By having each user run the report generation procedure at the scheduled time， supplying the necessary input variables.
By creating a program using DBMS_JOB that accepts one or more variables， and creating a job that calls this program using DBMS_JOB.
By having each user schedule a job using DBMS_JOB that accepts one or more input variables and calls a procedure that generates the report.
By having each user create a job using DBMS_SCHEDULER that includes all the information and commands necessary to generate the report.
By creating a program using DBMS_SCHEDULER that accepts one or more variables， and creating a job that calls this program using DBMS_SCHEDULER.
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