【单选题】How do data and information differ?
A.
data are a body of facts in a format suitable for decision making, while information is simply facts
C.
data are simply facts; information is a body of facts in a format suitable for decision making
D.
data are associated with decision support systems; information is associated with ERP systems
【单选题】The data file belonging to theSYSTEMtablespaceis corrupted and no backup of the file is available. How do you recover the data file?()
A.
The data file cannot be recovered.
B.
The date file can be restored from theSYSTEMauto backup.
C.
Take thetablespaceoffline,drop,kand re-create it.
D.
Recovery Manager (RMAN) is used to recover the data file.
E.
The ALTER DATABSE CREATE DATAFILE..commandis used to recover the data file.
【简答题】有关乳腺癌的病例对照研究 (1).现有100例乳腺癌女病人,选对照组的先决条件是什么? (2).假设妇女年轻时怀第一胎可能保护其不患乳腺癌,若进行病列对照研究以检验这一假设,要以社会经济状况为配对条件么?说出你的理由。 (3).能否用100例患者及100例对照检验未婚妇女乳腺癌率高于已婚妇女这个假设? (4).假定你发现80%的乳腺癌病例是已婚妇女,能否证明结婚可增加发生乳腺癌的危险度? (5)....
【单选题】按照凯恩斯的观点,利率低于“正常”水平时,人们预期债券价格( ),货币需求量( )。
【单选题】How do data and information differ?
A.
data are a body of facts in a format suitablefor decision making, while information is simply facts
C.
data are simply facts; information is a body offacts in a format suitable for decision making
D.
data are associated with decision supportsystems; information is associated with ERP systems
【多选题】关于理想与现实的关系,下列说法正确的是( )
C.
理想中包含着现实中必然发展的因素,又包含着由理想转化为现实的条件
【多选题】关于理想与现实的关系,下列说法正确的是( )
D.
现实是不完善和有缺陷的,理想的生命力表现为对现实的否定
【单选题】You need to ensure that old data and current data can be queried according to the business requirements. What should you do?()
A.
Specify a view based on the archival data table and current data tables.
B.
Specify that the data must be queried by using a stored procedure.
C.
Specify that both the archival data table and the current data tables must have indexes created on the same columns.
D.
Specify that a SQL Server Agent job must be used to copy current data into the archival data table each night.
【多选题】关于理想与现实的关系,下列说法正确的有()
A.
理想与现实是对立统一的,属于“应然”和“实然”的矛盾
D.
理想中包含着现实中必然发展的因素和由理想转化为现实的条件