Embedded Computing Design

So-called ‘real-time’ databases are popular these days. Here’s some quotes from the internet:

Firebase: “The Firebase Realtime Database is a cloud-hosted database. Data is stored as JSON and synchronized in realtime to every connected client.”

Hazelcast: “A real-time database is defined as a data store that collects, processes, and/or enriches incoming data in real time, immediately after the data is created.”

InfluxDB: “Today, a real-time database can mean different things. This glossary page considers two categories of real-time databases.

There is a tendency to conflate the terms embedded database and embedded system. That is a mistake.

There’s been an explosion of database systems since the late 90s. Whereas there were relatively few choices back in the day, now there are hundreds of choices of database systems that span different architectures, APIs, models, and more. This article will compare and contrast two database system architectures, embedded and client/server.

Change Data Capture (CDC) is broadly defined as tracking changes in a database. The purposes of tracking changes are many and varied.

Usually (with rare exception), a database is a shared resource, meaning that it is used concurrently by two or more tasks.

A distributed database system is one in which the data belonging to a single logical database is distributed to two or more physical databases.

Do an image search on Bing or Google for "Internet of Things Building Blocks" or similar and you'll find a plethora of visual depictions of tools and...