SQL stands for Structured Query Language which is one of the most in-demand skills for Data Science. It is widely used for storing, manipulating and retrieving data in the RDBMS (Relational Database Management System). The SQL commands which are used to retrieve the required data or information from the database are known as SQL queries.
In this article, I will be explaining the uses of SQL, some important definitions and steps to create a query with examples.
Here are some of the uses of SQL which makes working with databases much easier:
“Data is the new science. Big Data holds the answers.” — By Pat Gelsinger
Data Science is one of the most popular fields of the 21st century. It uses various tools and algorithms to extract knowledge and insights from the raw data. Then companies use these insights and knowledge for making predictions and taking decisions.
The rising popularity of Python in recent years made it one of the musts for Data Science. Its ease, flexibility and open-source nature are the reasons for its quick adoption in the industry.
There are various open-source Python libraries that makes it much easier and…
The UI (User Interface) design is a face for any website or an app and the way in which they are presented. It is responsible for attracting users and acts as an interface between the user and the website or an app. It is the job of every designer to make an effective and consistent design so that there is a seamless experience for the users. Without UI design, the website is just a collection of words and links. So to create an effectual UI design one must know the UI design fundamentals because knowing only about the tools doesn’t…
Super Nature, who art thou!
A thousand miles away nature,
Which we can never see,
Nor can ever touch,
It is a thousand times what we think.
It always feels our emotions day and night,
In rain or drought,
And we rarely feel it,
Nature! Standing on the tip of the needle,
If fallen to one side then its hail and storm,
If fallen to other then heat and sweat.
You give us everything we want,
However, we give nothing in return,
On the contrary,
We harm you every day,
So what if you harm us someday.
Whenever we think of backend, the ‘database’ is the first word that strikes our mind. It acts as a key component in almost all domains. The main aspects of having a database are storing and retrieving data. So here we are going to create a MySQL database and then retrieve the necessary data using SQL queries in phpMyAdmin.
So to get started with creating a database turn on the Apache and MySQL modules from the XAMPP control panel. if you are unfamiliar with the XAMPP server then don’t worry, go through “Temporary Web-Hosting using XAMPP and ngrok”.
Since code privacy is one of the main concern, no one prefers to share their source code with anyone, but what if we wanted to share our web app with someone? Neither one prefers to choose to share the whole source code nor to buy a hosting for this purpose. Right?
Rather we would prefer to host our project on the local server and then generate a temporary sharable URL. With this, the person to whom we provide the URL can easily have a look at the project without having access to the source code. …
Printing “Hello World” is one of the first programs in any programming language. Running this program successfully boosts up the confidence of every beginner and makes them feel like a programmer! Right?
In C/C++ every statement ends with a semicolon. Almost all the statements can be treated as expressions. There are a few ways where we can print a statement without using the semicolon. Those ways to do so are:
Following are the examples of printing “Hello World” using these methods.
Using if statement:
This is the code…