>>Is there a performance loss when switching to database containers?
>>Is there a decline in performance the more tables you include in a database container?
>>Are there any performance issues with using triggers on tables in a database container?

Didn't do any benchmarks on this, but I didn't notice any difference in performance from my applications by switching to database.

>>Are there other advantages to switching to database containers?

Longer field name.

Stored validation expressions for fields and the table.

Stored default values.

Referential integrity.

Persistent relations.

Stored procedures (used with triggers, referential integrity, validation defaults, and indexing).

HTH