Do like adrianh says and just insert rows into a table instead of creating a new table every time. What would you do when you have hundreds of tables? Would you join a hundred tables together to build your reports? With a single table it would just be a single query. What would you name your tables when you have that many? Are you going to write a maintenence routine to cleanup the database after creating a dropping hundreds of tables on a daily basis? With a single table it's the database's responsibility to clean the table's storage space. (actually, this is also a concern, but not as drastic as the impact of dropping and creating tables, depending on the database you're using.)