单项选择题
A. enable the “allow doc locking “ db property
B. create a view column for the locked doc view icon
C. add a profile doc to the db to manage the locked doc
D. enable doc locking at the view level for each view in the db
单项选择题 whichoneofthefollowingbestdescribestheuseofhiddencolumnformula?（）
单项选择题 hansisdesigningthereviewsapplication.theapplicationwillincludetwoforms:reviewandresponse,intheview,theresponsedocumentsdonotappearunderthereviewdocumentsfromwhichtheywerecreated,whatcouldbecausingthistohappen.（）
单项选择题 whichoneofthefollowingtypesofactionscanbeusedonunopeneddoc?（）