I think what AD was saying is that the primary purpose of a UUID *when compared 
with an integer* is that it is globally unique across all servers, not just 
'this' server, which of course I forgot to point out in my original reply. This 
means you have a choice of data type when creating a primary key, both of which 
have pros/cons. However, it is still a primary key, which has the primary 
purpose of ensuring data/model integrity.

As far as coding data saves, see 
http://book.cakephp.org/view/75/Saving-Your-Data for full details.

Jeremy Burns
Class Outfit

[email protected]
http://www.classoutfit.com

On 31 Dec 2010, at 17:09, John Maxim wrote:

> So normally we don't use char(36) ? and its primary purpose is not for
> data /model integrity .. if I hear you right, AD.
> 
> Is the Model::save method the way we usually save by calling
> 
> function add()
> {
> }
> 
> are there additional steps ?
> 
> thanks, best regards.
> Maxim
> 
> 
> On Dec 29 2010, 7:29 am, AD7six <[email protected]> wrote:
>> On Dec 28, 3:55 am, John Maxim <[email protected]> wrote:
>> 
>>> Hi Jeremy, Thanks for your link will definitely look into that.
>> 
>>> ~~Continue my question~~
>>> I was going to ask about using this:http://book.cakephp.org/view/1027/query
>> 
>>> There are 2 options if I'm correct based on cookbook 1.3
>>> ~~
>>> Rather than using an auto-increment key as the primary key, you may
>>> also use char(36). Cake will then use a unique 36 character uuid
>>> (String::uuid) whenever you save a new record using the Model::save
>>> method.
>> 
>>> according to:http://book.cakephp.org/view/903/Model-and-Database-Conventions
>>> ~~
>>> What's the advantage of using char(36) ?
>> 
>> A uuid (a 36 char string) is unique - always. It's main purpose is to
>> be unique, nothing else. Obfuscation is a side effect, not the goal.
>> 
>> They are most relevant with distributed datastores whereby you need to
>> synchronize data and inserts across multiple servers. An insert on
>> server A can safely and without concern be replicated to server B
>> because a row with the same ID cannot exist originating from another
>> server.
>> 
>> http://en.wikipedia.org/wiki/Universally_unique_identifier
>> 
>> AD
> 
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> with their CakePHP related questions.
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