You have enabled the Slow Query Log for a short period. When you process the Slow Query Log, you receive the following snip of output: Count: 100 Time=0 .22a (22s) Lock=0.00s (0s) Rows=0.0 (0), root[root] @localhost CREATE TABLE 't1' (id serial,id0 varchar(N) unique key,intcaoll INT (N) ,intco12 INT(N) ,intco13 INT(N) ,intco14 INT(N) ,intco15 INT(N) ,charcol1 VARVHAR(N) ,charcol2 VARCHAR(N) charcol3 VARCHAR (N) ,charcol4 VARVHAR(N) ,charcol5 VARCHAR(N) charcol6 VARCHAR (N) ,charcol7 VARVHAR(N) ,charcol8 VARCHAR(N) charcol9 VARCHAR (N) .charcol 10 VACHAR (N) ) Count: 64000 Time-0.02s (1213s) Lock=0.00s (6s) Rows=1.0 (64000), root [root]@ localhost SELECT intocl1, intco12, intco13, intco14, intco15, intco16,intco17, intco18 ,intcol9, intcol10, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6 ,charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' Count: 1 Time=0.02s (0s) Lock=0.00s (0s) Rows=1.0 (1) agent [agent] @localhost SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user, 's', host) = CURRENT_USER ( ) Count: 48000 Time=0.02s (778s) Lock=0.00 (3s) Rows=1.0 (48000), root[root]@localhost SELECT intocl1,intcol2,intcol3, intcol4, intcol5, charcol1, charcol2, charcol3 ,charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's' You want to tune the query such that it provides the greatest overall time savings. Which query will accomplish this?()
A、CHEATE TABLE 't1' (id serial, id0 varchar (N) unique key, intcol1 INT (N) ,intcol2 INT (N), intcol3 INT(N) ,intcol4 INT(N), intcol5 INT(N), charool1 VARCHAR (N) ,charcol2 VARCHAR (N), charcol3 VARCHAR(N), charcol4 VARCHAR(N), charcol5 VARCHAR (N) ,charcol6 VARCHAR (N), charcol7 VARCHAR(N), charcol8 VARCHAR(N), charcol9 VARCHAR (N) ,charcol10 VARCHAR (N)
B、SELECT intcol1, intcol2, intcol3, intcol4, intcol5, intcol6, intcol7, intcol8, intcol9, Intcol10, intcol11, intcol12, intcol13, intcol14, intcol15, intcol16, intcol17, intcol18, intcol19, charcol10 FROM t1 WHERE id = 's'
C、SELECT Select_priv, Repl_client_priv, Show_db_priv, Super_priv, Process_priv FROM mysql.user WHERE CONCAT (user,'s', host) = CURRENT_USER()
D、SELECT intcol1, intcol2, intcol3, intcol4, intcol5, charcol1, charcol2, charcol3, charcol4, charcol5, charcol6, charcol7, charcol8, charcol9, charcol10 FROM t1 WHERE id = 's'
Which parameters are valid SCREEN options for combating operating system probes?()
A、syn-fin, syn-flood, and tcp-no-frag
B、syn-fin, port-scan, and tcp-no-flag
C、syn-fin, fin-no-ack, and tcp-no-frag
D、syn-fin, syn-ack-ack-proxy, and tcp-no-frag
A customer is installing an HMC-managed Power 720 with two partitions, one for Production the other for Testing. They plan to use the Testing partition only occasionally and want to minimize hardware. Which of the following meets these requirements?()
A、Create a system profile for each partition. Assign all needed resources as 'required'.
B、Define all system resources as 'desired' on the Testing partition. Activate only as needed.
C、Create two shared processor pools. Assign the minimal I/O resources required for each partition to the shared pools.
D、Create both partitions with minimal 'required' resources, and optional resources as 'desired'. Activate each partition as necessary.
What is the required element for encryption key management on an LTO-5 drive within a tapelibrary?()
A、IBM LTO Encryption Manager
B、IBM Tape Encryption Manager
C、IBM Tivoli Single Sign On Manager (SSO)
D、IBM Tivoli Key Lifecycle Manager (TKLM)
若要将“产品”表中所有供货商是“ABC”的产品单价下调50,则正确的SQL语句是( )。
A、UPDATE产品SET单价=50 WHERE供货商=ABC
B、UPDATE产品SET单价=单价-50 WHERE供货商=ABC
C、UPDATE FROM产品SET单价=50 WHERE供货商=ABC
D、UPDATE FROM产品SET单价=单价-50 WHERE供货商=ABC
要从数据库中删除一个表,应该使用的SQL语句是( )。
A、ALTER TABLE
B、KILLT ABLE
C、DELETE TABLE
D、DROPT ABLE