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OOD and OOP

2 replies on 1 page. Most recent reply: Feb 26, 2003 9:16 PM by Gerry Giese

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chris

Posts: 1
Nickname: doctordee
Registered: Feb, 2003

OOD and OOP

Posted: Feb 20, 2003 12:23 PM

I am trying to learn the difference between these two. I have read hours worth of info on the subject and dont seem to have a clear understanding...Is OOD used to gather info and then used in OOP.. Does anyone have a simple explanation...

TRC

Posts: 6
Nickname: bdkr
Registered: Jan, 2003

Re: OOD and OOP

Posted: Feb 25, 2003 9:04 AM

According to Timothy Budd who wrote "Introduction to Object Oriented Programing", the use of objects aren't required to code using OOD. Don't let this throw you off or confuse you. I think the statement was made to get the person away from thinking purely in terms of syntax and mechanics and closer to thinking on a more flexible and abstract level.

Check here -> http://www.ddj.com/topics/patterns/
Check out this (http://www.ddj.com/documents/s=1697/ddj0006g/) as well for the writers approach to applying OOD in a procedural environment.

Another thing to look at is Responsibility Driven Design. When design objects (or hunks of code in general) and systems, when of the first things I often consider is responsibility. Once again, the use of Objects isn't implied, but as the writer in the article pointed to above, applying these ideas with a non-OO language isn't as intuitive.

Good luck,
Terrence

Gerry Giese

Posts: 18
Nickname: gerryg
Registered: Feb, 2003

Re: OOD and OOP

Posted: Feb 26, 2003 9:16 PM

I will also recommend a good book - http://www.amazon.com/exec/obidos/ASIN/0521785197 "The Object Primer" by Scott Ambler. It covers the whole OO thing quite well.

You're basic three are:

OOA = Object-oriented Analysis

-- Use cases, use case diagrams, business rules, UI screen definitions, CRC cards, etc.

OOD = Object-oriented Design

-- Class diagrams, sequence diagrams, activity diagrams, data modeling, etc. Note that high-level version of these can and often are used in OOA as well.

OOP = Object-oriented Programming

-- Writing (implementing) the code in an OO language as modeled in OOA/OOD. Most common are C++ and Java.

Hope this helps some.

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