Does refreshing mysql query by jQuery ajax crashs the database?

[skipskool]

I'm using jQuery .ajax function to load php page with a mysql query in it that selects data from the database, but my question is: Does refreshing mysql query by jQuery ajax crashs or tiring the database?Info: Refreshing by 1 second using setInterval().Edited: This the queries that I use to refresh them.\[code\]SELECT * FROM table1 ORDER BY id DESCSELECT * FROM table1 ORDER BY id ASC LIMIT 10DELETE FROM table1 WHERE id = 'something'\[/code\]I would you answer me.Thanks in advance