anything that may expose PlatformKey (a data provider, a
metadata provider, BaseEntity.Provider, undefined, …)
the platform to assume when the provider is absent or does not name a platform this build supports. Defaults to DEFAULT_DATABASE_PLATFORM.
THE seam through which runtime code picks a SQL dialect.
Any code that generates, formats, or re-executes SQL must derive its dialect from the provider that will actually run the SQL — never from a literal. A hardcoded
'sqlserver'is invisible on a SQL Server tenant and silently wrong on every other one.