📄️ Notes
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📄️ ClickHouse
ClickHouse is a columnar, distributed, parallel-processing, horizontally scalable, and disk or memory-based data management system (DBMS) developed for Yandex.Metrica. It supports SQL (with some variations from standard SQL) but lacks true update/delete and transaction support. ClickHouse is an open-source and free project developed in C++.
📄️ QuestDB
QuestDB is a relational column-based database designed for time-series and event data. It utilizes SQL along with extensions for time-series to assist with real-time analytics.