The relational data model is a logical database structure model that represents data in the form of tables (relations) consisting of rows and columns. Tables are linked to one another through common columns (keys), allowing complex information to be managed while maintaining data integrity. It serves as the foundation for the relational database (RDB), the most widely used database model today.

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• 2014h26a #74データベースの論理的構造を規定した論理データモデルのうち、関係データモデルの説明として適切なものはどれか。