单项选择题
A.they must be unique in a database
B.they can only be used once in a view
C.they can only used once on each form
D.they can be used mulriple times on a form
单项选择题 cindyhascreatedaprivateagent.shewantshercolleaguestobeabletouseit.whichoneofthefollowingshouldshedotoachievethis?（）
单项选择题 shirinplanstochangetheformandviewsofaproductiondatabase.shewillmakethechangeslocallyandthenupdatetheapplication’sdesigntemplatewiththechanges.whichoneofthefollowingservertasksdoestheadministratorruninorderforthechangestotakeeffect?（）
单项选择题 managementhasaskedbobtopostanintroductorywelcomepagewhennotesusersfirstopenthevideoapplicationinwhichoneofthefollowingplacesshouldbobputthewelcomemessage?（）