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1. www.codingbroz.com › databases-keys-hackerrankDatabases - Keys - HackerRank Solution - CodingBroz

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   Only fill in the name of the field which may be used as the primary key. Grading is case-sensitive. Solution – Databases – Keys – HackerRank Solution bookname Note: This problem (Databases – Keys) is generated by HackerRank but the solution is provided by CodingBroz. This tutorial is only for Educational and Learning purpose.

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     Solution – Databases – Natural Joins – HackerRank Solution...

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     Databases – Keys – HackerRank Solution In this post, we will...

2. github.com › jaimiles23 › HackerRank_SolutionsHackerRank_Solutions/databases/4_set_and_algebra/2 ... - GitHub

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   A primary key is a special relational database table column (or combination of columns) designated to uniquely identify each table record. Answer. bookname - these are unique between books. However, primary keys are normally numbers.

3. www.hackerrank.com › challenges › databases-keysDatabases - Keys | HackerRank

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   Leaderboard. Discussions. A database table with three fields (bookname, author, language) has been created. If the table is as provided below, which of these three fields may be used as the primary key? bookname-author-language. A Tale of Two Cities, Charles Dickens, English. Oliver Twist, Charles Dickens, English. Godaan, Premchand, Hindi.

4. github.com › blob › masterhackerrank/databases-keys.txt at master · charles-wangkai ...

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5. www.codingbroz.com › hackerrank-databasesHackerRank Databases - CodingBroz

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   Databases – Keys – HackerRank Solution In this post, we will solve Databases – Keys HackerRank Solution. This problem (Databases – Keys) is a part of HackerRank Databases series.

6. www.hackerrank.com › challenges › databases-keysDatabases - Keys | HackerRank

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   • This problem (Databases – Keys) is a part of HackerRank Databases series. A database table with three fields (bookname, author, language) has been created. If the table is as provided below, which of these three fields may be used as the primary key? Only fill in the name of the field which may be used as the primary key. Grading is case-sensitive.

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8. www.hackerrank.com › challenges › databases-keysDatabases - Keys Discussions | Databases | HackerRank

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   You've raised a valid point about the potential issues with using "bookname" as a primary key in a real-world scenario due to the possibility of different authors writing books with the same title. In a more robust database design, using a surrogate key like ISBN or introducing a unique identifier specific to each record might be a better practice.