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

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

    • Natural Joins

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

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

    Databases - Keys. 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.

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

    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.

  4. github.com › ybg345 › hacker-rank-solutionshacker-rank-solutions/Databases/Databases Section Q ... - GitHub

    Solutions to Databases Section of HackerRank: The subdomain-wise problem statement and solution of Database section of HackerRank is stated below - Subdomain - Relational Algebra: Subdomain - Indexes: Subdomain - OLAP: This subdomain is more relevant to MS SQL Server and some sort of advanced topics.

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

    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. However, given the options provided and the context of the question, it seems that "bookname" is the intended answer for this particular exercise.

  6. www.hackerrank.com › domains › databasesSolve Databases | HackerRank

    Solve Challenge. Database Query Languages. Multiple Choice QuestionMax Score: 2Success Rate: 83.90% Solve Challenge. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.

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

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