Community driven content discussing all aspects of software development from DevOps to design patterns. The goal of Hibernate and JPA is to hide the complexity of SQL and relational databases from the ...

Case Statement is used to provide IF-ELSE functionality in a SQL query to fetch result. We provide multiple conditions and according to condition matches the value will change for that that column ...

In the field of structured data computing, SQL is still the most widely used working language, not only adopted by all relational databases, but also targeted by many new big data platforms. For a ...

This post continues the series from the Adjoint School of Applied Category Theory 2022. It is a summary of the main ideas introduced in this paper: Filippo Bonchi, Dusko Pavlovic and Pawel Sobocinski, ...

The state rejected dozens of math textbooks. The New York Times reviewed 21 of them to figure out why. By Dana Goldstein and Stephanie Saul After the Florida Department of Education rejected dozens of ...

Linear algebra operations are at the core of machine learning. Multiple specialized systems have emerged for the scalable, distributed execution of matrix and vector operations. The relationship of ...

This SQL script is not converting to a functioning relational algebra statement: select distinct teaches.course_id from teaches join instructor on instructor.ID = teaches.ID where instructor.name = ...

Abstract: The paper proposes a method of parsing for relational algebra expressions, which is based on the use of reverse Polish notation (postfix notation). The operation algorithm of the shunting ...