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问题

The EMPLOYEES table 


The EMPLOYEES table has six indexes and DML operations are slow. Which command begins monitoring the EMPLOYEE_IDX_FK index to determine whether it has been used by an execution plan?()

  • AALTER TABLE employees monitor index employee_idx_fk; 
  • BALTER INDEX employee_idx_fk monitoring on; 
  • CALTER TABLE employees monitor all indexes; 
  • DALTER INDEX employee_idx_fk monitoring usage;&e
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分类:1Z0-032题库
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