A.Selection, projection, join
B. Difference, projection, join
C. Selection, intersection, join
D. Intersection, projection, join
E. Difference, projection, product
第1题
A. A job chain can contain a nested chain of jobs.
B. The jobs in a job chain cannot have more than one dependency.
C. A job of the CHAIN type can be run using event-based or time-based schedules.
D. The jobs in a job chain can be executed only by using the events generated by the Scheduler
第2题
A.createrecoverycatalog
B.createcatalog
C.buildcatalog
D.catalogcreate
E.mountcatalog
第3题
A.anycontrolfile
B.anyarchivelogfile
C.oneoftheredologmembers
D.lossoftheinitializationparameterfile
E.anydatafilebelongingtothedefaultpermanenttablespac
第4题
A.When uptime is critical
B.When data must be refactored
C.When application concurrency is static
D.When data loss is unacceptable
E.When application is a single point of failure
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