[sqlite] "Safe" maximum numbers of tables?

[Tito Ciuro]

Hello,

I was reading the FAQ and I came across this statement:

In practice, SQLite must read and parse the original SQL of all  
table and index declarations everytime a new database file is  
opened, so for the best performance of sqlite3_open() it is best to  
keep down the number of declared tables.

Is there a "safe" maximum number of tables that doesn't negatively  
impact too much sqlite3_open()? I wonder if it's 10, 25...?

Any ideas?

Thanks,

-- Tito