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SQL is incredibly powerful, and like every well-made development tool, it has a few commands which it’s vital for a good developer to know. Here is a list of SQL queries that are really important for coding & optimization. Each of the queries in the SQL tutorial is consequential to almost every system that interacts with an SQL database. 1. Retrieving Tables 36. Conditional Subquery Results 2. Selecting Columns from a Table 37. Copying Selections [...]

As the most common programming language, it is imperative that programmers and developers understand JavaScript code and JS commands. Developers with mastery over JavaScript code are the most valuable to employers. If you are new to web development and programming language, you will want to familiarize yourself with the JavaScript commands list. In learning JavaScript, it is essential that you learn about the best JS commands because this will allow you to craft JavaScript code [...]

You can do almost anything via graphical user interfaces in Windows. However, if you are a Mac OS X user then you want to check how to automate things using the lists of commands for Mac OS X. Also, there are many tasks that are repeatable and you can simply write the set of commands (into a so-called batchfile on Windows, script on Mac OS X and Ubuntu) that will do the same thing, the [...]

For many users, the Mac's OS X is one amazing user interface but for security researchers, programmers, and system administrators Mac's command-line interface is an important weapon and, in many instances, the only way to achieve specific tasks. Here is the list of some common operations via the command line for Mac Os X. Here's the list of commands with examples that might be a great cheat sheet for any user: locate lsof networksetup open [...]

Linux is an open-source operating system. It is based on the Linux kernel and this operating system is a typical package in a Linux distribution. It was developed for computers that were using intelx86 architecture. There are many commands in the Linux environment that are used for numerous other purposes. The following are some of the most important Linux commands which are frequently used by users while working in the Linux environment. Here's the list [...]

A shortcut or a “Shell Link” is basically a link to another file or object in your directory, which can also reference URLs (websites). This article will show you how to use C# and VBNET to create desktop as well as Internet shortcuts, to allow easier, faster access to resources, whatever your usage needs are. Shortcuts are a commonly-used tool, as they are used by installers to allow the user to easily install programs simply [...]

When application data complexity demands object-oriented data we need PostgreSQL. The object-relational database is a natural fit for object-oriented coding. PostgreSQL advanced queries have many advantages, such as table inheritance and foreign keys. For example, we can use relationships among data to find records. You can even add custom functions with other languages like C and Java! In this PostgreSQL tutorial, we are going to illustrate the best of PostgreSQL advanced queries. This will serve as [...]

Microsoft Office Excel is one of the most important tools to perform the calculation, analysis, and visualization of data and information. It helps people to organize and process data by the use of columns and rows with formulas and some cool features of MS Excel. In MS-Excel 2010, row numbers range from 1 to 1048576. There are a total of 1048576 rows, and columns range from A to XFD and there are a total of [...]

Cheatsheets are great. They provide tons of information without any fluff. So today we present you a small cheat sheet consisting of most of the important formulas and topics of AI and ML. Towards our first topic then. Table of content Activation functions Loss functions Regression Loss Function Classification Loss Function Statistical Learning Statistical Inference Regression Classification Feature Reduction Activation functions Activation functions are kind of like a digital switch that controls whether a specific [...]

The current world is running on computers. Knowing simple Unix commands or basic Unix commands enables you to dive into the world of Unix or Linux system. It also allows confirming the current system state and control files or directories. Here is the list of Unix command line basics for beginners. Once the Unix startup is concluded, it will display a login window for the user to insert a username and password. If the username [...]