单项选择题

AnapplicationconnectstoaSQLAzuredatabase.TheapplicationoccasionallylosestheconnectiontotheSQLAzuredatabase.Youneedtorecommendanapproachforreliablycompletingdataaccessoperations.Whatshouldyourecommend？（）
A.UseMicrosoftADO.NETconnectionpooling.
B.Passexceptionstotheuserinterfacelayer.
C.Implementaretrypolicyinthedataaccesslayer.
D.Beginatransactionbeforeeachdataaccessoperation.

A.TheapplicationoccasionallylosestheconnectiontotheSQLAzuredatabase.Youneedtorecommendanapproachforreliablycompletingdataaccessoperations.Whatshouldyourecommend？（）
A.UseMicrosoftADO.NETconnectionpooling.
B.Passexceptionstotheuserinterfacelayer.
C.Implementaretrypolicyinthedataaccesslayer.
D.Beginatransactionbeforeeachdataaccessoperation.

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单项选择题（）个变量的地址称为该变量的“指针”。

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