Which data directory subdirectory provides the information used to inspect the internal execution of the server at runtime.

Solution (By Examveda Team)

This question is asking about a specific folder within the MySQL data directory that helps us understand how the server is working while it's running.

Let's break down the options:

Option A: mysql - This folder holds the actual database files. It doesn't directly show us how the server is running.

Option B: performance_schema - This is the right answer! The performance_schema directory is designed specifically for monitoring and analyzing the performance of your MySQL server in real-time.

Option C: sys - This folder contains system-level information, but it's not focused on real-time server execution like performance_schema.

Option D: nbdinfo - This folder is related to NDB Cluster, a special type of MySQL setup, and not for general server inspection.

Therefore, the correct answer is Option B: performance_schema.