People's visit and people's order are different entities and don't contain any correlation between data. For example, a customer can be in a restaurant (just looking at the menu) and at the same time ...

Abstract: Code Smell can be defined as any feature in the source code of a software that may indicate possible problems. In database languages, the term Bad Smell has been used as a generalization of ...

This repository showcases a collection of SQL-based data analysis projects I have worked on across different domains. Each project demonstrates how structured data can be transformed into actionable ...

Oracle’s PL/SQL language has two basic mechanisms for getting data from the database: SELECT and cursors. SELECT is designed to return a single row into local variables; cursors give you the ability ...