[Newbies] Re: Beginners Digest, Vol 75, Issue 4

[Bruce Prior]

Before I asked the question, I thought of the object domain much as 
Casey has said:

"I think of an object domain as just the set of objects which implements a feature or solves a problem."

Thanks to Chris, David and Casey for adding more detail and different viewpoints. It all helps to improve my understanding.




On 12-07-08 5:00 AM, beginners-request at lists.squeakfoundation.org wrote:
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>     1. Re: Object Domain (Casey Ransberger)
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> Message: 1
> Date: Sat, 7 Jul 2012 10:17:51 -0700
> From: Casey Ransberger <casey.obrien.r at gmail.com>
> Subject: Re: [Newbies] Object Domain
> To: "david.mitchell at gmail.com" <david.mitchell at gmail.com>,	"A friendly
> 	place to get answers to eventhe most basic questions about	Squeak."
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> I agree with David's statement below, generally. It's worth noting that in Smalltalk, our object memory + virtual machine together serve as a kind of non-relational database which preserves both state and behavior, but one doesn't generally have to think about it and that's beautiful:)
>
> Even in SQL one has triggers and stored procedures, so perhaps the distinction is pervasively arbitrary. Someday we may have fast non-volatile RAM and no separate long term storage, at which point databases and persistence as we popularly think about them may even disappear entirely.
>
> One of Smalltalk's offspring, the Self language, uses message sends (as far as the programmer is concerned) to access state, and thus does away with assignment in the usual/low-level sense. This is fun to think about (for me anyway!)
>
> Someone please correct me if I'm wrong here, but I think of "object domain" and "object model" (where the word model is distinct from and more general than the Model in MVC) as being interchangeable.
>
> I think of an object domain as just the set of objects which implements a feature or solves a problem. I suppose I may have my terminology mixed up though, so sound off if I'm wrong here folks:)
>
> --Casey Ransberger
>
> On Jul 6, 2012, at 2:42 PM, David Mitchell <david.mitchell at gmail.com> wrote:
>
>> I think a lot of people think of the domain as the database, but I've always thought of the database as how you store your domain model, not the domain model itself.
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> End of Beginners Digest, Vol 75, Issue 4
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