How to start learning enikeyu?

Question

Database

Hello.
After 5 years of enikeyship, I decided to change the area to work with the database (analytics, uploads, adjustments, and that's all) with the dream of leaving for devops.
Now I randomly study everything that comes to hand, I feel that there is not enough base (mathematics, algorithms, and other university courses).
Tell me a good, preferably free, course, reminiscent of an institute one. The volume is not important, the main thing is to be detailed and with maximum benefit.
Thanks to.

Answer 1

You all the same decide what you want to become DBA or DevOps?
I think you first need to have sysadmin experience up to the middle level, and then move towards your chosen specialization, since both specialties require knowledge of Linux and other applied things in the form of networks, OS features, etc.
about the courses - there are no such super dupers, so some kind of LPIC (for Linux) and analogues for Windows basic have passed and it's enough - get settled somewhere as an intern - in hosting / integrator / telecom. Since the system administrator is basically not about book knowledge, but about the experience of operating software / hardware, the experience of organizing services / backups / monitoring.

Answer 2

What the hell is DBA math and algorithms for? You just need to know SQL and the nuances of the operation of specific DBMS. It is even better if there is a deep knowledge of operating systems and hardware in order to squeeze the maximum performance out of the database server.

Answer 3

with a dream to go to devops.

Now I randomly study everything that comes to hand, I feel that there is not enough base (mathematics, algorithms, and other university courses).

Why the hell do devops need math and algorithms? This is not an alpha or excel developer.
Learn Linux administration and popular services, working with containers, ci/cd tools and orchestrators.

Answer 4

Tell me a good, preferably free, course, reminiscent of an institute one. The volume is not important, the main thing is to be detailed and with maximum benefit.

Uh...Institute?