Difference between SQL GROUP By and HAVING Clause
In RDBMS, both the GROUP BY and HAVING clauses are used in combination with aggregate functions to perform operations on grouped data. However, they are used for different purposes in…
What is the Fill factor in SQL Server?
The fill factor in the Microsoft SQL server is the setting that specifies the percentage of space on each leaf-level page to be filled with data when the index is…
Safeguarding Data Privacy: The Vital Role of Computer Security
In today's modern and digital age of data-driven movements, data plays a crucial role in our personal and professional lives. Everything we do generates data in this digital world, both…
What is a Flat File ? And Why is It Important?
What is a Flat File? A flat file or a sequential file is a type of file that stores data in the form of columns and rows to emulate a…
What is Job Tracker in Apache Hadoop?
JobTracker is a daemon service that is used for submitting and tracking MapReduce(MR) jobs in the Apache Hadoop framework. In a typical production cluster, JobTracker runs on a separate machine…
Starting Apache Spark Application
To start an Apache Spark application, we need to create an entry point using a Spark session, configure Spark application properties, and then define the data processing logic. Spark Context…
Important Data Warehouse Interview Questions
In this blog post, we will go over the Important data warehouse interview questions that are asked during interviews. Question: What is a Data Warehouse? Answer: A data warehouse is…
Important AWS Glue Interview Questions
In this blog post, we will look at some of the frequent and important AWS Glue Interview questions. Question: What do you understand by AWS Glue? Answer: Glue is a…
Bash Scripts Interview Questions
This blog post has the top Bash Interview questions and answers that will help you prepare for the next Bash scripts Interview. You can check this Linux interview blog post…
Essential AWS EMR Interview questions
In this blog post, we will review the Essential AWS EMR interview questions frequently asked in interviews. Question: What is Amazon EMR? Answer: Amazon EMR (previously known as Amazon elastic…