Search results
In this post, we will solve Databases - Keys HackerRank Solution. This problem (Databases - Keys) is a part of HackerRank Databases series.
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.
My HackerRank solutions. Contribute to charles-wangkai/hackerrank development by creating an account on GitHub.
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.
In this post, we will solve Databases – Keys HackerRank Solution. This problem (Databases – Keys) is a part of HackerRank Databases series.
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.
We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
