單項(xiàng)選擇題SQL數(shù)據(jù)庫(kù)出現(xiàn)結(jié)構(gòu)性損壞,用DBCC能部分修復(fù),下列哪些語句會(huì)實(shí)現(xiàn)其要求()

A.CHECKDB
B.SHRINKDATABASE
C.DBREINDEX
D.CHECKALLOC


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1.多項(xiàng)選擇題關(guān)于SQLServer中timestamp(時(shí)間戳)這種數(shù)據(jù)類型的描述不正確的為()

A.等價(jià)于datetime數(shù)據(jù)類型
B.每次插入或更新包含timestamp列的行時(shí)該值均會(huì)更新
C.timestamp列可作為主鍵
D.等價(jià)于datetime數(shù)據(jù)類型的短日期格式形如’99-1-22’

2.多項(xiàng)選擇題SQLSERVER系統(tǒng)默認(rèn)的數(shù)據(jù)庫(kù)為Master,有時(shí)需要修改系統(tǒng)的默認(rèn)數(shù)據(jù)庫(kù),請(qǐng)選擇正確的語句()

A.sp_defaultdb’sa’,’ufsystem’
B.sp_default_db’ufsystem’
C.sp_detach_db’sa’,’ufsystem’
D.sp_defaultdb’sa’,’ufdata_999_2002’

3.多項(xiàng)選擇題由以下語句創(chuàng)建的表有種子字段,請(qǐng)正確組合插入語句,可不分先后。CREATE TABLE Customer(id int IDENTITY PRIMARY KEY,Customer varchar(40))()

A.INSERT INTO Customer
B.SET IDENTITY_INSERT Customer ON
C.VALUES(3,’garden shovel’)
D.(id,Customer)

4.單項(xiàng)選擇題關(guān)于兩個(gè)表對(duì)應(yīng)的不匹配查詢的正確語句為()

A.SELECT[ccode]FROM[GL_accsum]where not exists(SELECT*FROM[code]group by ccode having[ccode]=[GL_accsum].[ccode])
B.SELECT[ccode]FROM[GL_accsum]v where ccode not in(SELECTccodeFROM[code] where[ccode]=[v].[ccode])
C.select A. ccode from[GL_accsum]a left join code bon A.[ccode]=[b].[ccode] where B.ccode is null
D.select A.ccode codes from[GL_accsum]a join code bon A.[ccode]=[b].[ccode] where B.ccode is null

5.多項(xiàng)選擇題SQL語句Select ccode as ccode1 into code1 from code出錯(cuò)的原因可能為()

A.缺少數(shù)據(jù)表code
B.數(shù)據(jù)庫(kù)中已存在code1表
C.數(shù)據(jù)庫(kù)損壞
D.數(shù)據(jù)庫(kù)中的配置參數(shù)不對(duì)