Week 4 Reading Notes

This week's readings covered databases, metadata and the Dublin Core Metadata Initiative.

Database Models:
Hierarchical
Network
Relational
Post-Relational

The Relational Model is the most commonly used. Information is organized in columns and rows. Values which are repeated can suggest a connection between values. In this way you can connect records which contain these values. Numbers that relate to one another are called "Primary Keys."

Indexing, Database Transactions (ACID), Replication, Locking and Concurrency Control were also discussed.

I enjoyed reading about the logic involved in forming connections between various pieces of information.

Metadata:

I think the use of Metadata by libraries will be crucial in the future vetting and classification of information. Metadata takes context, content and structure into account when organizing information. Descriptors relating to the content, context or structure can be attached to a piece of information.

Metadata can be used to develop a hierarchy relating to quality of information, or form complex relationships between different pieces of contextually related information.



Dublin Core Metadata Initiative:

Search out and describe the diverse resources available on the web. Reading through the programming language was interesting. The logic involved in programming seems both
simple and incredibly complex at the same time.



Muddiest Point:

What is Replication used for?

Posts:

Lauren Menges's Blog

https://www.blogger.com/comment.g?blogID=7036399065753048748&postID=914671250983336515&page=1

Brandon Baker's Blog

https://www.blogger.com/comment.g?blogID=84548656281186042&postID=107728577542712375