Use one cube and apply dimension permissions to each company for their data only. 
https://docs.microsoft.com/en-us/sql/analysis-services/multidimensional-models/grant-custom-access-to-dimension-data-analysis-services

Yep - apples and oranges. 

Multi-Dimensional and Tabular will both give you analytical cubes, but both have weaknesses and strengths, choose your type carefully. 
R - best to read...

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Next time, run the code to see what is holding up the log space reuse.
Maybe this points you in the direction of the issue.

select name,...

thanks for the question.

can you telnet to port 25 on your mail server from this host?

Duplicate post - read replies here; https://www.sqlservercentral.com/Forums/1868675/Some-questions-related-to-the-Interview

Well, let's be honest. In most cases, people intend to move jobs, for better money and circumstances. 
If the company you apply to is one of interest, even better. 

Depends on your goals, and interests, and who you hope to get employed by.

There are several different certification paths you can follow, all detail on Microsoft certification pages....

Seems MS documentation needs to be updated. 
Apologies if anyone lost points! 🙂

Are you using replication, mirroring or Availability Groups, then you might also want to run select name, log_reuse_wait_desc from sys.databases. 
There might be some additional reasons why your logs grow....