If I list 4 databases like below with their sizes, does
media being 2.5TB have any effect on the performance of queries on other databases? Does the number of databases have any effect on MySQL performance (without considering any usage on any databases)?
ads (259 MB) media (2.5 TB) forums (25 GB) archives (853 MB)
SELECT * FROM archives take longer to run if media is 4 TB's than if it is 1 TB? Do indexes, number of tables, etc. have any effect cross database?