Abstract: We introduce a web-based SQL query visualisation tool aimed at improving students' understanding of SQL query execution. The tool, available as an Open Educational Resource (OER), allows ...
A nested set is a smart way to implement an ordered tree that allows for fast, non-recursive queries. For example, you can fetch all descendants of a node in a single query, no matter how deep the ...
Abstract: Data plays a crucial role in computer science, serving as its backbone in various applications. Understanding and interacting with data stored in databases often requires technical knowledge ...
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