RelaX is an online relational algebra tool that we will use for the assignments. It allows entering relational algebra expressions and executing them to get results ...

(a) Consider again Question 3 in Tutorial 1 (Challenge) to find the restaurants that sell all the pizzas that Maggie likes and don’t sell any pizza that Ralph likes. Write a relational algebra ...

There are two types of relational database manipulation language: procedural and assertional. A procedural language is one in which a query is expressed through a sequence of operations. This category ...

Abstract: This paper presents BR∀CE, a Blockly-based, tile-based [11] environment to develop relational algebra and relational calculus queries. The tool runs in a browser, works with any database ...

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 ...

Abstract: This paper expresses one-to-many transformations by extending relational algebra to resolve the problem that relational expressions are difficult to execute one-to-many data transformations, ...