What SQL version för ArcGIS PRO 2.7?

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Is there a compability matrix to understand what SQL version I need to install If I work with ArcGIS pro?
My knowledge in installing servers is not the best. This is just a workshop for me to understand
how a server has to be setup to work with ArcGIS pro. For this workshop I will not install all the enterprise package. I just want to learn how to install and setup the server correct. 

What I want accomplish is this.
Install a SQL server correct to be able to work with ArcGIS pro  and FME to read and write to SDE. 

Ive tried the free SQLEXPRESS but I only get it to work with ArcGIS desktop 10.x.

What I ment by work is referring to 
* create .sde
* create featureclasses with ArcCatalog and ArcGIS desktop

What I did not manage to work
Creating a database connection (sde)  in ArcGIS PRO

What I have installed 

SQL express the latest version
SQL Management studio
Microsoft_ODBC_Driver_17 for SQL server 

Summarize
Novice skilled in databas servers
I just want to learn how to install and setup the server correct so I can work seamless with FME and PRO.

[Anonymous User · Accepted solution]

Here is info on the compatibility between ArcGIS Pro and SQL Server versions:

Microsoft SQL Server database requirements for ArcGIS 10.8.x and ArcGIS Pro 2.5, 2.6, and 2.7

[SwerefTM]

Thanks.. I will read the documentaion and try do install the clients accordning to the informationen on that page. 
I will update this thread if I succeeded.