Posts

Featured Post

SQL Interview Success: Unlocking the Top 5 Frequently Asked Queries

Image
 Here are the five top commonly asked SQL queries in the interviews. These you can expect in Data Analyst, or, Data Engineer interviews. Top SQL Queries for Interviews 01. Joins The commonly asked question pertains to providing two tables, determining the number of rows that will return on various join types, and the resultant. Table1 -------- id ---- 1 1 2 3 Table2 -------- id ---- 1 3 1 NULL Output ------- Inner join --------------- 5 rows will return The result will be: =============== 1  1 1   1 1   1 1    1 3    3 02. Substring and Concat Here, we need to write an SQL query to make the upper case of the first letter and the small case of the remaining letter. Table1 ------ ename ===== raJu venKat kRIshna Solution: ========== SELECT CONCAT(UPPER(SUBSTRING(name, 1, 1)), LOWER(SUBSTRING(name, 2))) AS capitalized_name FROM Table1; 03. Case statement SQL Query ========= SELECT Code1, Code2,      CASE         WHEN Code1 = 'A' AND Code2 = 'AA' THEN "A" | "A

4 Layers of AWS Architecture a Quick Answer

Image
I have collected real interview questions on AWS key architecture components. Those are S3, EC2, SQS, and SimpleDB. AWS is one of the most popular skills in the area of Cloud computing. Many companies are recruiting software developers to work on cloud computing. AWS Key Architecture Components AWS is the top cloud platform. The knowledge of this helpful to learn other cloud platforms. Below are the questions asked in interviews recently. What are the components involved in AWS?   Amazon S3. With this, one can retrieve the key information which is occupied in creating cloud structural design, and the amount of produced information also can be stored in this component that is the consequence of the key specified. Amazon EC2 . Helpful to run a large distributed system on the Hadoop cluster. Automatic parallelization and job scheduling can be achieved by this component. Amazon SQS . This component acts as a mediator between different controllers. Also worn for cushioning requirem

Amazon Web services Daily career tips subscribe today

Image
You will receive daily tips to your email id. They are suitable to all application developers and working professionals in Amazon web services. These are from theory to practical and other relevant tips to find suitable jobs. You can subscribe here. You will receive tips on the following points. Get ready and share it to your friends also. Tips about AWS What the developers will do , if they selected for AWS jobs What type of roles available in AWS Interview tips on AWS Best training on AWS Also Read: Top 8 AWS basic Questions and answers 5 Key modules you need to learn in AWS

How to Work on Re-skill Legacy to Recent

Image
How to work on your reskill plan to grow your career from any level. Just you need to learn and be ready with proficiency. Someone will absorb you.

Sqoop Real Use in Hadoop Framework

Image
Why Sqoop you need while working on Hadoop-The Sqoop and its primary reason is to import data from structural data sources such as Oracle/DB2 into HDFS(also called Hadoop file system). To our readers, I have collected a good video from Edureka which helps you to understand the functionality of Sqoop. The comparison between Sqoop and Flume How name come for Sqoop Sqoop word came from SQL+HADOOP=SQOOP. And Sqoop is a data transfer tool. The main use of Sqoop is to import and export a large amount of data from RDBMS to HDFS and vice versa. List of basic Sqoop commands Codegen- It helps to generate code to interact with database records. Create-hive-table- It helps to Import a table definition into a hive Eval- It helps to evaluate SQL statement and display the results Export-It helps to export an HDFS directory into a database table Help- It helps to list the available commands Import- It helps to import a table from a database to HDFS Import-all-tables- It

4 Tableau Popular Products

Image
I want to share with you what are Tableau Products most popular. This quick review helps you get instant knowledge. Tableau Products We’ve done years of research to build a system that supports people’s natural ability to think visually. Shift fluidly between views, following your natural train of thought. You’re not stuck in wizards or bogged down writing scripts.  You just create beautiful, rich data visualizations.  It's so easy to use that any Excel user can learn it. Get more results for less effort. And it’s 10 –100x faster than existing solutions. Here is all about  What is Tableau software 1. Tableau desktop Tableau Desktop is based on breakthrough technology from Stanford University that lets you drag and drop to analyze data. You can connect to data in a few clicks, then visualize and create interactive dashboards with a few more. 2. Tableau server Tableau Server is a business intelligence application that provides browser-based analytics anyone can

2 Top Real-time AI New Approaches for Learners

Image
Artificial Intelligence (AI) applications in real-time have two approaches. Those are Applied and Generalized. This post tells you the differences between these two. Artificial Intelligence (AI). Artificial Intelligence is the broader concept of machines being able to carry out tasks in a way that we would consider smart. How the AI started.  A machine, which has reproducing capabilities, basic arithmetic, and memory are called logical-machines. As enter into a new era, a new thought process created now called AI (Artificial Intelligence) AI Approaches Artificial intelligence has two approaches - Applied and Generalized.  Applied Artificial Intelligence.   The Applied AI is, you can find in systems designed to trade the Stocks or maneuver an autonomous vehicle would fall into this category.  Generalized Artificial Intelligence.   Systems or devices that can, in theory, handle any task – are less common, but this is where some of the most exciting advancements are happening today. Mach

Scala: Unique features you need to know

Image
Let us start it in layman terms... Why you need Scala... The name Scala stands for “scalable language.” The language is so named because it was designed to grow with the demands of its users. Where Scala can be applied... You can apply Scala to a wide range of programming tasks, from writing small scripts to building large systems.   The real use of Scala... Scala is easy to get into. It runs on the standard Java platform and interoperates seamlessly with all Java libraries. It’s quite a good language for writing scripts that pull together Java components. But it can apply its strengths even more when used for building large systems and frameworks of reusable components. Technically, Scala is a blend of object-oriented and functional programming concepts in a statically typed language. The fusion of object-oriented  and functional programming shows up in many different aspects of Scala; It is probably more pervasive than in any other widely used language.