有支护的深基坑工程的挖土方案主要有（）。 分层分段挖土。 放坡挖土。 中心岛式挖土。 盆式挖土。 逆作法挖土。
使用市场法评估机器设备的条件是必须有（）和具有可比性的（）。 商品市场。 公开市场。 参照物。 参考价格。
Which statements describe the capabilities of the DBMS_NETWORK_ACL_ADMIN package?（） It can be used to allow the access privilege settings for users but not roles.。 It can be used to allow the access privilege settings for users as well as roles.。 It can be used to control the time interval for which the access privilege is available to a user.。 It can be used to selectively restrict the access for each user in a database to different host computers.。 It can be used to selectively restrict a user's access to different applications in a specific host computer.。
A customer wants to configure two resource groups and create the following shared filesystem structure：Resource GroupFilsystem Mount Point Rg1/app1 Rg2/app1/data Which of the following will ensure the proper mount order for these filesystems？（） Set filesystem recovery method to parallel。 Set filesystem recovery method to sequential。 Set filesystem recovery method to parallel and configure a parent/child relationship for the resourcegroups。 Set filesystem recovery method to sequential and configure a parent/child relationship for the resourcegrou。
A customer feels they are over-provisioning their current storage environment and falling short onperformance requirements. Which IBM solution can best help this customer manage their multi-tiered disk environment more effectively?（） IBM Systems Director 。 DS8700 with Easy Tier 。 SAN Volume Controller v6.1 。 Advanced Fully Automated Storage Tiering。
Which two operations can be performed on an external table（）
