関連ワード:  define first normal form in database normalisation    define first normal form 1nf in database normalization    what is the main purpose of first normal form in database normalisation    what is normalization 1nf 2nf 3nf    what is 1st normalization in database    what is 1nf normalization    what is 3nf normalization  
結果 : define first normal form in database normalisation