It demonstrates the core knowledge required for working in the exciting and ever-changing field of cybersecurity. Security+ validates the understanding of key troubleshooting principles across a wide range of IT-related activities and confirms an understanding of industry best practices.
While creating strong passwords and changing them regularly serves as a preferred security practice, configuring your database users to authenticate via two-factor authentication is a giant leap forward in improving your overall database security strategy.
At a high level, SQL queries use statistics and other variables to determine what execution plan to run. As a result, a given SQL statement (SQL ID) may end up having multiple execution plans (hash plans) over time. Depending on the execution plan selected at runtime, performance can improve or degrade accordingly.