Aggregate and Scalar Functions in Database
What is Aggregate Function? An aggregate function in a database is a function that operates on a set of values and returns a single aggregated value as a result. These…
What is Aggregate Function? An aggregate function in a database is a function that operates on a set of values and returns a single aggregated value as a result. These…
In Software engineering, caching is a process of storing frequently accessed expensive data in a temporary state area called cache. The main goal of caching is to improve the performance…
Precision Agriculture, also known as smart farming or precision farming, is a modern data-driven farming technique that collects and analyzes field data by using technology and optimizes crop production to…
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…