Build a Real‑Time Dashboard with Deno, Materialize, and Chart.js

This tutorial walks through creating a live dashboard by generating simulated user‑score events, storing them in Redpanda, materializing the data with Materialize, streaming updates via a Deno WebSocket backend, and visualizing the results in real time with Chart.js on the frontend.

Backend DevelopmentChart.jsDeno

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Build a Real‑Time Dashboard with Deno, Materialize, and Chart.js

dbaplus Community

Mar 4, 2020 · Databases

How to Optimize Scalar Subqueries in Oracle SQL for Better Performance

This article explains the nature of scalar subqueries, identifies three common performance pitfalls, and provides practical rewrite techniques—including LEFT/INNER JOIN, MERGE, and WITH‑MATERIALIZE—illustrated with three real‑world Oracle SQL cases to dramatically reduce execution time.

OracleSQLScalar Subquery

0 likes · 15 min read

How to Optimize Scalar Subqueries in Oracle SQL for Better Performance