(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 ...

翔泳社では、「独習」「徹底入門」「スラスラわかる」「絵で見てわかる」「一年生」などの人気シリーズをはじめ、言語や開発手法、最新技術を解説した書籍を多数手がけています。プロジェクトマネジメントやチームビルティングといった管理職向けの ...

Tutorial 3-may2025.pdf Tutorial document describing PL/SQL exercises and learning objectives. Tutorial 5-may2025.pdf Tutorial document with exercises involving functions like calculating total orders ...

Follow this step-by-step guide to install PostgreSQL, load data, connect to a database, and execute SQL queries including table joins PostgreSQL is an open-source, object-relational (also called ...

Abstract: In this paper, we present a translator from a relevant subset of SQL into relational algebra. The translation is syntax-directed, with translation rules associated with grammar productions; ...

NoSQL databases are extremely popular among developers thanks to their flexible schemas and rich data types like JSON. But those same attributes make getting data out of them using traditional SQL ...