Oracle and rails. Begginers' error screen.

While I was doing db:migrate, I got this message. I've made several sites on the same db and typed db:migrate again.



ORA-00955 Error. You can solve this problem by drop table xxxx_seq;



Yes. It is a begginers' mistake. And now it works fine with Oracle after
dropping ****_seq table.

Everyware: The Dawning Age of Ubiquitous Computing

A book recommended by DLD07 Video podcast "Interface and design" session.
And you can buy it at http://www.yes24.com/Goods/FTGoodsView.aspx?goodsNo=1927945&CategoryNumber=002
These are some resources that Adam Greenfield suggests
http://v-2.org/bookshelf.php
http://www.v-2.org/

PHP vs Java vs Ruby

I linked the original article. Anyway it really was fun to read the article.

Bray, who is Director of Web Technologies at Sun Microsystems, co-creator of the XML 1.0 and XML Namespace standards, co-founder of Open-Text, and contributor to the Atom Publishing standard (whew!) spoke in a presentation entitled “How to combine PHP technology with Java based on Enterprise Systems”

“Mostly because there’s less code. The fact that Ruby forces MVC on you helps too, also the fact that the templating and [Object Relational Mapping (ORM)] and testing and application code are all so tightly integrated helps. Bear in mind that we still don’t know how well Rails is going to work outside of the CRUD-centered greenfield app space where it shines.”

My thoughts about web 2.0

As a result, web is about seeing entertainment stuffs, and other informations that you want. As a platform, it is moving to small devices. But seeing is equivalent element. So imaging technology is core aspect. I think Adobe's stategy about this would conquer the debate around ajax technologies. They're currently focusing on integrating PDF and Flash format. Soon we'll see the results.

web2.0 submit video link

Kevin Rose is the famous people of this year as far as I think.


He is the founder and chief architect of digg, where he oversees all aspects of the management and development of the digg web site. The basic idea is not that unique though, the interface of the site is easy to grasp. He's 2 years older than me.
digg.com is based on bloggers' participations.


http://www.web2con.com/pub/w/49/conversations.html

Web programming class - project team logo

I'm attending a web programming class which need a project team. Team name is "Prison Break", I made a web2.0 style logo via http://msig.info/web2.php. This site automaticaly generate Flickr style logos. I thought this solution is just appropriate for us.

I requested a free web hosting at http://www.freeonrails.com/. Still waiting the administrator's answer. I'm plannig to use Ruby on Rails as our web server framework. Here is the message that I posted.

================================================

Hello. I'm a student majoring in computer science in Korea.My friends and I are studying Ruby on Rails and ajax. By googling I found freeonrails, and registered without hesitating. For now we want to make a project site. In class, we are practicing javascript. It wan't easy to find a hosting site which give little sapce with Ruby on Rails capability in Korea. I'm 28 years old, and interested in Web2, Long Tail theory. I think there still are posibilities to start a biz through web. Ideas are flowing everywhere, and changes are too fast to catch. Agile development with Ruby on Rails would help at this point. I'm looking forward your permission.Thank you.

Future of Web Apps

Tom Coates gave one of the best conference presentations ever today at The Future of Web Apps in San Francisco. It doesn't look like his slides are online, but you can see his presentation from the last Future of Web Apps conference here.

How can I add value to the Aggregate Web?
A web of data sources, services for exploring and manipulating data,
and ways that users can connect them together

Native to a Web of Data
1. Look to add value to the Aggregate Web of data
2. Build for normal users, developers and machines
3. Start designing with data, not with pages
4. Identify your first order objects and make them addressable
5. Use readable, reliable and hackable URLs
6. Correlate with external identifier schemes
7. Build list views and batch manipulation interfaces
8. Create parallel data services using standards
9. Make your data as discoverable as possible