Monday, August 4, 2008
SQL Versus Other Topics
Monday, July 28, 2008
Data Modeling and Normalization
The Wikipedia article on data modeling was a little hard to get through. I understood it better when I read the article Data Modeling: Finding the Perfect Fit and it talked about entities more clearly. Then it really helped when I read about the ERD. The UACBT-VTC MySQL videos were helpful too. I didn’t get everything about the ERD though. I understood the crow’s feet and the O. But when it started getting into lines and dashes, I got a little confused. The Entity Relationship Diagram Example was helpful, but I was still confused some. I just need to practice.
For normalization, the UACBT-VTC MySQL videos were pretty easy to understand. But when I got to the Wikipedia article, I had no clue what it was talking about. The University of Texas page on normalization was a little confusing, but I started to understand it better. Then the Database Normalization Pt 1 and Database Normalization Pt 2 were really helpful. Part 1 summarized the benefits right away and talked about the primary key right away, instead of waiting until later to say how important it was. It made it seem simple, but maybe that’s because I had already read several things by then. The Three Normal Forms tutorial was a little hard to look at. I had to scroll up and down to see the spreadsheet and then read about it. It is nice that it is provided as a pdf. I saved it and might print it in order to read it better. But I liked that it showed a real spreadsheet. That was helpful.
I think I need to reread some articles and I think that something like this really takes experience to understand completely. I understood somewhat because of working with Access and trying to create a database. It’s hard work and a lot of thinking and planning. Data modeling and normalization helped me to understand why it’s so hard and why it’s important to really plan the database out well before creating it.
Monday, July 21, 2008
Week 9 Readings
Another good article was "What went wrong? Unsuccessful information technology projects" by Brenda Whittaker. It was helpful in understanding why technology plans failed. It really made a lot of sense and made it clear for me why some projects that happened in my work place failed.
"Life is what happens to you when you’re making other plans" by Michael Shuyler was in interesting article. He seemed to think that technology plans were not that helpful and were needed for others and not for those who write them. I liked how he mentioned that they should be flexible and gave an example with things that really happened to him.
"Information technology plans" by Robert Dugan was a really good article. It explained well the process for writing a technology plan. It talks about how it can be a guide for many different things such as identifying weaknesses and strengths concerning technology implementations, letting everyone know what the library is doing, to manage a budget, among many other things. It talked about how information technology plans can be structured three different ways in academic libraries. Where I work, it is part of the strategic plan. It also talked about how to write a plan and what sections are recommended to be included. I think that this article is really helpful.
Tuesday, July 15, 2008
Demo system update
XML Tutorials
The UACBT videos were pretty good. The parts where he just did PowerPoint was pretty boring to watch. The parts where he showed how to right XML made a lot of sense. He explained things well and clearly. He really made the difference between and the uses for HTML and XML clear.
Wednesday, July 9, 2008
Demo system status
HTML Tutorials
I also like the mcli tutorial. It required that you do the exercises along with it, which was helpful because it made me do it. It wasn't organized as well as the w3schools tutorial. Also, it had some things in the advanced section that were in the basic section of the w3schools. Overall, I think it helped me going through the exercises.