判斷題一個(gè)規(guī)范的數(shù)據(jù)結(jié)構(gòu)轉(zhuǎn)換成3NF和BCNF范式的數(shù)據(jù)結(jié)構(gòu)的步驟是規(guī)范化-1NF-2NF-3NF-BCNF。