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 ...

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 ...

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 ...

For some students, learning algebraic expressions feels like drudgery, but it doesn’t have to be that way. These three activities will get your students moving, talking, and thinking deeply about ...

School of Education, University of New England, Armidale, NSW, Australia Holyoak (1984) and Holyoak and Koh (1987) highlighted four tasks to facilitate analogical learning: construct a mental ...

As data analytics has become an important application for modern data management systems, a new category of data management system has appeared recently: the scalable linear algebra system. We argue ...

An illustration of a magnifying glass. An illustration of a magnifying glass.

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 = ...