So - there's a bunch of tables in this SQL Server database that store the date as an integer rather than as a date, so as to reduce space used.
Perfect - unless you look at the storage requirements of those two data types.
Printable View
Are you sure it was stored as an int to save size? A lot of places store it as an int to store epoch time.
It is for a stock futures trading platform, so I think we are safe :-)