Re: id field
David Calinski <[email protected]> Tue, 11 Nov 2003 11:43:25 +0100
| Newsgroups | gmane.comp.tools.memaid.devel |
|---|---|
| Message-ID | <[email protected]> |
On Tuesday 11 of November 2003 10:33, Fernando Antonio Mac Cracken Cezar wrote: > Talking the system time as id number may lead 2 or more > cards to have the same id. If 2 cards are created in a given > short period of time, the 2 successive system time calls may delivery > the same value (this short period is SO dependent). Is anybody able to pass through 2 new items, and pick 2 grades for them, in just 1 second? > My suggestion is to take a random number and make a bit operation > on top of the system time. That *can* result in a 2 same id, can't it? DC ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/