MySQL what is the maximum size of a database?

Question

I have looked all over the MySQL website and found no definitive answers.

1. Is the size of the database determined by the operating system or is there 4GB limit

Answer 1

1- With respect to database size, the limit is dependent on Operating System file size. Please see this article
2- The effective maximum table size for MySQL databases is usually determined by operating system constraints on file sizes, not by MySQL internal limits. (Source)
3- You may google for MySQL vs SQL Server Vs Oracle, also check this link