Top 5 Courses to learn AWS CloudFormation in 2021 - Best of Lot

Hello guys, If you are learning AWS and want to learn AWS CloudFormation service in-depth and looking for the best online training courses then you have come to the right place. Earlier, I have shared the best AWS courses for beginners and today I am going to share the best online courses to learn AWS CloudFormation in depth. If you don't know, Amazon AWS CloudFormation is a service provided by AWS to manage all of your application resources in one place if your application uses many services such as Amazon EC2 and Amazon RDS and so on because managing them separately can take your time and it will be so difficult especially for complex application infrastructure. 

Top 5 Books to Learn Python in 2021 - Best of Lot

Hello guys, if you want to learn Python and looking for the best Python books then you have come to the right place. In the past, I have shared the best Python 3 courses and today, I am going to share the best books to learn Python programming in 2021. Whether you are an AI expert or a Computer Science student, you will come across Python Programming language sooner or later in your career. Starting its journey in 1991, Python has now captured the Programming world. Started as just a scripting solution for trivial stuff, Python is now everywhere.

Top 5 Courses to learn WordPress in 2021 - Best of Lot

Hello guys, if you want to learn WordPress for creating online websites and start your career in web design and website development then you have come to the right place. In the past, I have shared the best courses to learn HTMLCSSJavaScriptBootstrap, and Web development and today I will share about the best online training courses to learn WordPress. WordPress is one of the easiest ways to create a website. It's also one of the most important tools for web designers and web developers. If you know WordPress, you can work on different kinds of companies like startups and even multi-national. WordPress also allows you to do a lot of freelancing work.

Top 5 Hibernate Books for Java Developers - Best, Must read

Hibernate is one of the most popular, open-source ORM (Object Relational Mapping) framework, which has now become a standard for developing persistence layer on Java enterprise application, along with JPA (Java Persistence API). I often receive requests to suggest which book is best to learn to hibernate or recommendation about some good books and training courses on Spring and Hibernate. This motivates me to write this article about some of the best books on Hibernate currently available on the market.

Top 5 Python Books to Learn Data Science and Machine Learning in 2021 - Best of Lot

While there are many online courses to learn Python for Machine learning and Data science, books are still the best way to for in-depth learning and significantly improving your knowledge. Python is a universal language that is used by both data engineers and data scientists and probably the most popular programming language, as well. All the Data Scientists I have spoken to, and many in my friend circle just love Python, mainly because it can automate all the tedious operational work that data engineers need to do. To make the deal even sweeter, Python also has algorithms, analytics, and data visualization libraries like Metaplotlib, which is an essential data scientist.

10 Examples of ConcurrentHashMap in Java

Hello guys, if you are new to Java programming and want to learn ConcurrentHashMap class in Java then you have come to the right place. Earlier, I have shared the best books and best courses to learn Java, and today, I am going to share 10 examples of using ConcurrentHashMap in Java. As a Java programmer, you might have heard about the ConcurrentHashMap class of java.util.concurrent package. If you don't let me tell you that ConcurrentHashMap is an important class in Java and you will often find yourself dealing with this class in a multithreaded and concurrent Java application. If you are wondering where to start and how to master this essential Java class then you have come to the right place.

Top 5 Courses to learn Unreal Engine in 2021 - Best of Lot

Hello guys, if you are interested in game development then you may have heard about the Unreal engine, a popular engine to create games in C++. The Unreal Engine is open-source software that allows developers to make video games without even the need to be good at programming or even a programmer with some pre-made games such as a first-person shooter where you can edit it and not starting from scratch. If you want to learn Unreal Engine and looking for the best online courses and tutorials then you have come to the right place.

How to setup JNDI Database Connection pool in Tomcat - Spring Tutorial Example

Setting the JNDI Database Connection pool in Spring and Tomcat is pretty easy. Tomcat server documentation gives enough information on how to set up a connection pool in Tomcat 5, 6, 7, 8, or 9. Here we will use Tomcat 7 along with the spring framework for creating a connection pool in the Tomcat server and accessing them in Spring using JNDI code. In our last article, we have seen how to set up a database connection pool in Spring for a core Java application that doesn't run on a web server or application server and doesn't have a managed Java EE container.

Why use Cloud Computing? Advantages and Disadvantages

Hello guys, If you are curious about what is Cloud computing and why every company both big and small are going to cloud native then you have come to the right place. In the past, I have shared best Cloud Computing courses and both free and paid courses to learn popular cloud platforms like AWS, GCP, and Azure. In this article, I am going back to basics and tell you about what is cloud computing and what benefits it offer. Cloud Computing has been a buzz word in the IT world from the last few years. When it first appeared, like many things, a lot of people has dismissed it as being the next big thing, but cloud computing has certainly lived up to expectation and truly shift how the Information technology arm of business function today.

Top 5 Courses to learn Amazon AWS EC 2 in 2021 - Best of Lot

Hello folks, if you have been working in AWS then you definitely know about Amazon EC2, one of the most essential and popular AWS services. If you are new to AWS, don't worry, I'll give a brief overview of what is Amazon EC2 and why should you learn it. And, If you are looking for online courses to learn more about AWS EC2 service then you have come to the right place. In the past, I have shared the best AWS courses for beginners and several courses to pass AWS certifications for programmers and in this article, I am going to share the best online AWS courses from Udemy and Pluralsight to learn AWS EC2 service in depth.

How to Crack Java SE 11 Developer Certification Exam [1Z0-819] in 2021

If you have heard that Java SE 11 Certification is the toughest of Java certification at the developer level, then you have heard it right. It's indeed one of the difficult certifications to crack, and It's much harder than OCAJP 8; it's the predecessor, and some of the programmers who have attempted it calling it even harder than OCPJP 8, a professional-level certification. In order to crack Java SE 11 certification, you need to prepare hard, but, at the same time, you also need to know which areas you should focus on. What topics should you spend more time on and which books and courses can help you to learn those essential topics?

Top 5 Courses to Learn QlikView and QlikSense in 2021 - Best of Lot

Hello guys, If you are learning QlikView and QlikSense and looking for the best QlikView courses to start your learning journey then you have come to the right place. In the past, I have shared the best course to learn Tableau and Microsoft Excel and today, I am going to share the best course to learn both QlikView and QlikSense in 2021. These courses have been created by experts and trusted by thousands of developers around the world and you can join it to learn this useful and in-demand skill in 200. If you are in Business Analytics and Intelligence world then you would have definitely heard bout QlikView and QlikSense, two of the most modern tools for Business Intelligence and Data Analytics. Both products are offered by Qlik company and widely used for BI and Data Visualization performance.

Top 5 Courses to Crack CompTIA Linux+ certification in 2021 - Best of Lot

Hello guys, if you are preparing for CompTIA Linux+ certification and looking for the best online courses and practice test to pass this certification exam in the very first attempt then you have come to the right place. In the past, I have shared the best courses to learn Linux and pass certification like CompTIA A+, Cloud+, and Security+, and today, I am going to share the best CompTIA Linux+ course and practice test. These are created by experts and trusted by thousands of developers and they are chosen from websites like Udemy, Whizlabs, and other reputed online portals. You can use them to prepare better for this certification and crack in the first attempt.

SQL Self Join Example - SQL Query to Find Employees Earning More Than Managers - LeetCode Solution

Hello guys, are you looking for a simple example to understand how to use SELF JOIN in SQL? If yes, then you have come to the right place. In this article, I'll show you how you can use Self join to solve interesting SQL problems from LeetCode. Along the way, you will also learn this useful SQL concept. So, what are you waiting for, let's first check the problem, and then we'll write an SQL query using SELF Join to solve this problem.

Write an SQL Query to Find Employees Earning More Than Managers
The Employee table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id as shown below:

+----+-------+--------+-----------+
| Id | Name  | Salary | ManagerId |
+----+-------+--------+-----------+
| 1  | Joe   | 70000  | 3         |
| 2  | Henry | 80000  | 4         |
| 3  | Sam   | 60000  | NULL      |
| 4  | Max   | 90000  | NULL      |
+----+-------+--------+-----------+

Given the Employee table, write a SQL query that finds out employees who earn more than their managers. For the above table, Joe is the only employee who earns more than his manager because Henry's Manager is Max who earns 90000 which is more than Henry's salary of 80000.

Difference between row_number(), rank() and dense_rank() window functions in SQL

Though all three are ranking functions in SQL, also known as a window function in Microsoft SQL Server, the difference between rank(), dense_rank(), and row_number() comes when you have ties on ranking i.e. duplicate records. For example, if you are ranking employees by their salaries then what would be the rank of two employees of the same salaries? It depends on which ranking function you are using like row_number, rank, or dense_rank.

Top 5 ITIL Foundation Certification Courses and Practice Tests in 2021 - Best of Lot

Hello guys, if you are in tech support or IT Service Management professional looking to validate their skills by passing the ITIL 4 Foundation certification and looking for the best online courses and practice tests to prepare well then you have come to the right place. In the past, I have shared many certification resources like CompTIA Linux+, CompTIA Security+, and CompTIA Network+, and in this article, I am going to share the best online ITIL Foundation training courses and practice tests you can take to prepare for this prestigious IT certification. These courses and Practice tests are also your best chance to pass the ITIL 4 Foundation certification in the very first attempt.  If you don't know much about the ITIL Foundation certificate then let me give you a brief overview first.

Top 5 Courses to learn Microsoft Azure Cloud Platform in 2021 - Best of Lot

Hello guys, if you want to learn about Microsoft Azure Cloud Platform then you have come to the right place. In the past, I have shared the best courses to pass Azure FundamentalsAzure Administrator, and Azure Architect certifications and today I am going to share the best online course to learn Azure platform for Beginners. These are top-quality courses from expert trainers and instructors and picked from websites like Udemy, Coursera, and edX. You can use these courses to not only learn Microsoft Azure core services but also to prepare for different Microsoft Azure certifications like AZ-900, AZ-300, and AZ-20 Azure developer associate certification.

Top 5 AWS SysOps Administrator Associate Certification (SOA-C01 ) Practice Tests, Mock Exams, and Dumps in 2021

Hello guys, if you are preparing for AWS certifications like the AWS SysOps Administrator Associate certification exam and looking for some challenging practice test and mock tests then you have come to the right place. In the past, I have shared the best AWS SysOps Administrator Courses and in this article, I am going to share 5 best AWS SysOps practice tests, mock tests, and exam dumps to prepare well for this difficult and prestigious AWS certification. Along with the book, online training course, and hands-on labs, mock test and practice question is the third important piece of the puzzle to pass any AWS certification exam and AWS Certified SysOps Administrator Associate is no different.

Top 5 Courses to Crack Certified Kubernetes Application Developer (CKAD) Exam in 2021

Hello guys, if you are preparing for Kuberfnetes Application developer certification or want to become a Certified Kubernetes Application developer (CKAD) and looking for the best online courses to prepare for this certification then you have come to the right place. Earlier, I have shared the best courses to learn KubernetesDocker, and CKA courses, and today, I am going to share the best online courses to crack the Kubernetes Developer certification, also known as the CKAD. These are the best and most affordable online courses from Udemy, Pluralsight, and Whizlabs and help you to prepare for key exam topics that are tested during the certification exam.