OLAP is a class of database apps that permits analysts to investigate data quickly with the help of a two-dimensional spreadsheet. This skill is essential if you wish to utilize SQL professionally. It allows you to gather numbers to comprehend the requirements of a business. PHP is another skill for any SQL developer. Python is a general-purpose programming language that has a simple, easy-to-learn syntax that emphasizes readability and therefore reduces the cost of program maintenance. Moreover, the language is capable of scripting, is completely open-source, and supports third-party packages encouraging modularity and code reuse. comment: Often cited as one of the most useful and least used programming conventions, a comment is a text note added to source code to provide explanatory information, usually about the function of the code. Comments are usually helpful to someone maintaining or enhancing your code when you are no longer around to answer questions about it. Other sites on the Stack Exchange network further encourage knowledge sharing across topics such as cooking and medicine. Build a private community to share technical or non-technical knowledge. Stack Overflow is the largest, most trusted online community for developers to learn, share their programming knowledge, and build their careers. Best Resources for Coding Interviews. The selection of good resources is very important for success in your coding interviews. If you chose the wrong resource then more than money, you will lose the valuable time you need for preparation, hence spending some time researching for a good resource. Start for free. If you’ve made it this far, you must be at least a little curious. Sign up and take the first step toward your goals. Sign up. Learn the technical skills to get the job you want. Join over 50 million people choosing Codecademy to start a new career (or advance in their current one). The up-vote system is a huge help for developers looking to get quick answers, and moderators usually do a good job of keeping the answers straightforward. 3. Quora. After going through the mandatory signing up, you’ll find out that Quora is a great place to read quality content shared by its users. With GitHub code search, your code—and the world’s—is at your fingertips. Try it now Watch video Search, navigate, and understand your team’s code—and billions of lines of public code. QbnPx0.