Information Technology IT – 10 Database and file concepts | e-Consult
10 Database and file concepts (1 questions)
The appropriate database relationship to model this scenario is a one-to-many relationship. The one side of the relationship is the Author, and the many side is the Book. This is because one author can write multiple books, but each book is written by only one author.
This relationship type is suitable because it accurately reflects the real-world scenario. It ensures data integrity by preventing orphaned books (books without an associated author) and orphaned authors (authors with no books listed). The relationship also improves data efficiency. When querying for all books by a specific author, the database can efficiently retrieve all related books using the foreign key relationship established between the tables. This avoids redundant storage of the author's name with each book record.
Here's a conceptual representation:
- Author Table: (AuthorID (Primary Key), AuthorName, AuthorBiography)
- Book Table: (BookID (Primary Key), Title, ISBN, AuthorID (Foreign Key referencing Author.AuthorID), PublicationYear)