Star Schema

    At the most basic form, the database schema is the representation of the logical configuration of the relational database, as a whole or as a part. It can also be defined as the skeletal structure which demonstrates the entire database through a logical view. It may exist only as a visual representation or as a group of formulae which govern a database. These formulae are communicated through a data definition language for the system to understand, such as SQL. 

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    NodeJs Interview Questions

    Node.js was initially developed by Ryan Dahl and saw its first release in May 2009. It is a JS environment used to execute JavaScript code outside the browser. Based on Chrome’s V8 engine, it represents the JavaScript anywhere and everywhere programming paradigm, unifying the web app development to a single language rather than different languages for server and client-side scripting.

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    URL vs URI

    We all use many URLs on a daily basis. Sometimes we type them, sometimes we are just redirected to one URL by another. It is interesting to know that most of us think http://google.com or http://facebook.com are just URLs, but only a few know that we can also refer to them as the URI with the “I”. The URI, in fact, is a superset of URL and something called as a URN. We can thus safely conclude that all URLs are URIs. The opposite is not true, though.

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