A.多個(gè)實(shí)例同時(shí)操作一個(gè)數(shù)據(jù)庫 B.多個(gè)實(shí)例操作多個(gè)數(shù)據(jù)庫 C.一個(gè)實(shí)例同時(shí)操作多個(gè)數(shù)據(jù)庫 D.一個(gè)實(shí)例操作一個(gè)數(shù)據(jù)庫
A.ABS B.ACOS C.CEIL D.CHR
A.CONNECTIONS B.PROCESSES C.NUMBEROFCONNECTIONS D.NUMBEROFPROCESSES