What is the embedded server library when building from source enabled by?

Answer: Option A

This question asks about a special option used when building MySQL from its source code. This option lets you include a built-in server within your application instead of needing a separate MySQL server running on your system.

Let's break down the options:

Option A: -with-embedded-server
This is the correct option. The -with-embedded-server flag tells MySQL to build with the embedded server library included. This means you can run MySQL directly within your application without relying on a separate server process.

Option B: -with-server-embedded
This option doesn't exist in MySQL.

Option C: -with-embedded-library
This option is similar to -with-embedded-server but it might not include all the server features. It's best to use -with-embedded-server for a complete embedded MySQL experience.

Option D: -with-library-embedded
This option doesn't exist in MySQL.

In short, when building MySQL from source, the -with-embedded-server option is the key to including the embedded server library and enabling you to run MySQL directly within your application.