You have two database servers SEMP and SACCT. The database in the SEMP server maintains the employeeinformation and the database in the SACCT server maintains the accounts payable information. The employeessubmit the expense reports to the accounts payable department. A user of the accounts payable databasewants to extract the employee information from the database in the SEMP server for cross-verification. Whichschema object enables the user to access the information from the remote database() Cluster。 Database link。 Mapping table。 Materialized view。
在我国,由货物运输部门代理货物运输保险业务,由航空人身意外伤害保险等的兼业代理形式,属于() 银行代理。 机关代理。 行业代理。 社区代理。
安全链是一个“串联”硬接点回路,它用于触发紧急停机1和紧急停机2,那么在联合动力UP82-1.5MW安全链种包括:() 机舱内紧急停机按钮;。 塔架底部紧急停机按钮;。 转子超速传感器;。 机舱振动传感器;。 变桨系统紧急停机触点(接触器);。 PLC控制器触点(接触器);。 解缆限位开关。。
From the V$SESSION_LONGOPS view, you find that some of the database users have longrunning queries and are consuming a lot of CPU time. This causes problems for you when you try to log on as the system user and perform small maintenance tasks. You would like to ensure that users SYS and SYSTEM get priority over all other users. Which method would you use to achieve this objective?() create a plan directive in the SYS_GROUP。 create the pending area for the consumer group。 activate the provided SYSTEM_PLAN in Resource Manager。 set the TIMED_STATISTICS parameter to TRUE in the parameter file。 set the execution time limit for all users, except SYS and SYSTEM, in their profile。
编码特异性原理
创业者打算购买一家现存企业之前。必须对其进行全面的审查,主要包括()。