Jenkins is an open-source, self-contained continuous integration/continuous delivery and deployment (CI/CD) software used for automating tasks while building, testing, delivering, and deploying software. It allows developers to find and solve…
A data pipeline is a process that extracts data from various sources, transforms it into a suitable format, and is loaded to a data warehouse or other data storage layer.…
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…
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…
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? 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…
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…
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…
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…
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…