Thursday, September 30, 2010

Week 5 notes

1) Database. http://en.wikipedia.org/wiki/Database
This article is a great overview of the inner workings of databases.  I use them frequently for class research, but I have only a basic grasp of how they operate and are built.  Some of this article went too far into depth (mostly in the sections that seemed like alphabet soup), but the types of databases are well explained.  I never thought about how many types there are; they seems pretty similar on the surface.  A database brings to mind what I access through PittCAT, but in reality there are so many more kinds.  I never thought of the Internet as a database, but it is classified as a hypermedia database.  This makes sense because search engines help organize the information.  I also found the replication and security sections interesting.  I could guess that the more replication there is, the greater the risk is for breaking security/confidentiality.

2) Anne J. Gilliland. Introduction to Metadata, pathways to Digital Information: 1: Setting the Stage
http://www.getty.edu/research/conducting_research/standards/intrometadata/setting.html
Metadata boggles my mind in the same way metacognition (thinking about thinking) does.  It’s hard to comprehend such minute, specific things.  The “big picture” in this article spelled out metadata pretty clearly: “the sum total of what one can say about any information object at any level of aggregation.”  The “content, context, structure” model breaks it down clearly as well.

The paragraph “But there is more to metadata than description and resource discovery. ...” got me thinking.  I like the idea of incorporating activities/uses with information.  This could be especially helpful in libraries and museums for programming.  This emphasizes the importance of the information.

Also, user-created metadata is interesting.  Users can organize and tag information in ways that they find useful, so it makes their experience better.  But this can also make the tangle of information even more complex.

3) Eric J. Miller. An Overview of the Dublin Core Data Model
http://dublincore.org/1999/06/06-overview/
I had never heard of the Dublin Core Data Model before reading this article, but once I read a description of what it is, it made sense.  Why not have a standard model for metadata?  With the overload of information, this could make organizing and retrieving much easier.  Yes, some resources will need more metadata, but this seems like it would work for the majority of resources.

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