(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 ...

DBMS Interactive Visualizers This repository contains a collection of interactive web-based visualizers designed to help students and enthusiasts understand fundamental concepts in Database Management ...

Abstract: Parallel execution of relational algebra operators can be performed on single computer, multiprogramming or multitasking operating systems. In doing so, time response can be improved, ...

Abstract: In the paper, we introduce bag relational algebra with grouping and aggregation overa particular representation of incomplete information called c-tables, which wasfirst introduced byGrahne ...

Any data that does not fall into the traditional field structure (alpha, numeric, dates) of a relational DBMS. Examples of complex data types are bills of materials, word processing documents, maps, ...