What's a good method to create a primarykey ( not using autoincrement )

Hi all,
I 'd like to know if somebody knows a good and simple method to generate a unique primarykey.
I don't want to use the autoincrement feature of DBMS and avoid using GUID ( it's a too long value).
Any suggestion ?
Cheers.
Stefano

gnunix wrote:
I'm wondering why someone would want to implement auto increment on their table? As I understand this, the way it is implemented in other databases is not standard, so your code wouldn't be portable.Agreed! I've always said that a database is only good for 3 things:
1. Storing data
2. Relating data
3. Searching data
I'm working on a project now where I'm trying to get the value of the auto increment field after the update occurs. I want the value of the field to be returned to me so that I can select the record back from the database to display this information on a confirmation page. This is turning out to be a nightmare to get this to work properly using the Statement.getGeneratedKeys(). I am sure this is so difficult because of my relative inexperience with JDBC.No, it's just the wrong approach. You should (in my opinoin) generate the key before you insert.
I am curious about this GUID thing your all talking about. It's simply a unique identifier. It's guaranteed that every GUID generated will be unique.
I did a google search on this and am faced with a wall of results that have little to do with what I imagine this is. Is GUID some sort of auto generated (app side) number that can be inserted into the database that is unique? If so, it sounds like just the solution I would be looking for to completely forget about generating these unique numbers database side. http://en.wikipedia.org/wiki/Globally_Unique_Identifier
And yes, the GUID is by far the best solution we have at the moment.
Edited by: wpafbuser1 on Mar 19, 2008 2:38 PM

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