You have created a locally managed tablespace by issuing the following command： CREATE TABLESPACE data1 DATAFILE ’data1_file1.dbf’ SIZE 10M AUTOEXTEND ON MAXSIZE UNLIMITED； For the DATA1 tablespace， you have set the warning level alert limit to 70 percent. In which situation will a warning level alert be generated？（） when 700 KB is used。 when 700 KB is left as free space。 when 7MB is used。 when 7MB is left as free space。 no alert will be generated because an autoextensible datafile is included in the tablespace。
货架沿立体仓库的宽度方向分成若干排，每两排为一组，中间是巷道，由巷道起重机进行商品的存取。具有这种特点的立体仓库是（） 单元货格式立体仓库。 贯通式立体仓库。 垂直循环式立体仓库。 水平循环式立体仓库。
The server host1 has been set up as a backup system with the following /etc/exports： /backups -rw How can a second server regularly use this disk space？（） /usr/sbin/mkfs -s 8G -o nbpi=2048，frag=512 /dev/lv00 -b -l host1。 /usr/sbin/crnfsmnt -d /backups -l /backups host1 -R -X -v -S -b bg。 /usr/sbin/mknfsmnt -f /backups -d /backups -h host1 -a -S -t rw -w bg -g。 /usr/sbin/crfs -v nfs -g vg1 -A yes -p rw -m /backups -a logname=/dev/lv00。
Your developers have created table to store some of their program's data. After examining the slow Query Log, you see that they are using the LIKE operator and SUBSTER () functions against a VARCHAR (10000) column quite often. An example of the start of one row of data: 'GREEN01020495888331993-12-10/2…' What should you do to improve the overall performance?（） Convert the column to TEXT and add a fulltext index to the table。 Create multiple prefix indexes of differing lengths。 Convert their column to BINARY。 Redesign the table so that the most commonly searched for string patterns are in their own colum。
掠夺性定价
A small company has an IBM System x3105 file server. They are looking for an alternative for tape-based backup and disaster recovery for their 80 GB of data. The backup window is 1 to 2 hours using an incremental， 3-cartridge rotation with off-site storage.
What solution fits best for this purpose？ （）
