If there is almost no data contention between applications for a particular resource in the database , permitting multiple applications to access the database improves concurrency 如果多個(gè)應(yīng)用程序?qū)τ跀?shù)據(jù)庫中的某個(gè)特定資源幾乎沒有訪問沖突,則允許多個(gè)應(yīng)用程序訪問數(shù)據(jù)庫就會(huì)提高并發(fā)能力。