Last Updated
：2025/11/20
first normal form
Noun
uncountable
Japanese Meaning
第一正規形：リレーショナル・データベースの正規化における第一段階で、繰り返しグループや属性をそれぞれ別々のテーブルに分割し、主キーと外部キーの関係で連結することで冗長性と重複を排除する手法です。 / 第一正規形：データベース設計において、各レコード内に繰り返し項目が存在しないように、全てのデータを原子値へ分解し、正規化を実施する基本的な段階を指します。
Quizzes for review
(databases) A stage in the normalization of a relational database in which repeating groups and attributes have been eliminated by putting each into a separate table connected by a primary-key/foreign-key relationship.
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first normal form
When designing the schema, applying first normal form requires eliminating repeating groups by moving them into separate tables linked by primary keys.
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When designing the schema, applying first normal form requires eliminating repeating groups by moving them into separate tables linked by primary keys.
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