This week I decided to take traditional notes on the readings rather than comment on each of the readings. I hope we are allowed to post these kinds of notes.
Database- Wikipedia
- Every major organization uses operational databases.
· - Those who don’t have access to the operational data use the data warehouse. The data from the operational database is summarized and put into the warehouse.
· - Analytical databases are used to analyze the information that is in the data warehouse.
· IMDB is an external database. External databases are not used by a single organization.
· The entire web is a hypermedia database.
· Object database model is used to ensure that databases and programs of the same industry used the same “type system.”
· The most common type of storage for databases is B+ trees and ISAM.
· Indexing improves performance- makes queries run faster and more cheaply.
· Replication- keeping multiple copies of the database on different computer hard drives. –Allows for better access.
· Locking a database ensures that a file isn’t changed during a transfer.- there are multiple types of locks.
· Deadlocks- when a transaction tries to change information that has already been locked.
· IMDB is an external database. External databases are not used by a single organization.
· The entire web is a hypermedia database.
· Object database model is used to ensure that databases and programs of the same industry used the same “type system.”
· The most common type of storage for databases is B+ trees and ISAM.
· Indexing improves performance- makes queries run faster and more cheaply.
· Replication- keeping multiple copies of the database on different computer hard drives. –Allows for better access.
· Locking a database ensures that a file isn’t changed during a transfer.- there are multiple types of locks.
· Deadlocks- when a transaction tries to change information that has already been locked.
I have found that databases are very complex systems and, at times, confusing to those unfamiliar with how databases work.
Anne J. Gilliland. Introduction to Metadata, pathways to Digital Information: 1: Setting the Stage
· - Metadata- data about data
· Provides information for accessing collections in libraries.
· Context, content and structure of data are described by metadata.
· Metadata describes “administration, accessioning, preservation, and use of collections.”
· User-created metadata
· More metadata is applied to something over its lifetime.
· Provides information for accessing collections in libraries.
· Context, content and structure of data are described by metadata.
· Metadata describes “administration, accessioning, preservation, and use of collections.”
· User-created metadata
· More metadata is applied to something over its lifetime.
Eric J. Miller. An Overview of the Dublin Core Data Model
· Dublin Core Metadata Initiative (DCMI) works toward making digital metadata universal throughout the world for every field.
My metadata notes are much shorter than my notes on the database article, because I felt confident in my understanding of the metadata article. My notes for The Dublin Core Data Model are short for the exact opposite reason. With all the coding, I wasn’t sure what I was supposed to be getting out of this reading. I am interested to understand these concepts, but I am currently lost on this topic. I hope there will be some clarification in class.
Brittany,
ReplyDeleteI'm really glad that you did your Reading Notes this way! It helps to have an organized summary of the readings, we should find a way to implement this into the class, what do you think?
Also, I agree with you on the concepts of the Dublin Core Data Model. The beginning of the article was not that hard to understand, but as I went deeper in, the codes and concepts got somewhat confusing. Maybe we could collaborate on a few questions for the professor?
Katie,
ReplyDeleteI think it would be helpful to all of us if we took notes this way. We don't necessarily have to go in depth, but writing how feel about one topic that we come across in our readings hasn't really been effective in helping me learn this material. I hope this is an acceptable form of notes, as mostly everyone seems to be writing their reaction to the readings.
I too understood the beginning of the Dublin Core Data Model, when it was simply discussing the purpose of the model- to make metadata universal- but once it started explaining other things I wasn't understanding. I think when we have learned more about coding, we might be more comfortable in this area (I hope).
I appreciate your style of notes as well! The bulleted list is effective in highlighting the most important points while leaving out all the fluff (some of which I don't always understand anyway, and the simple points can get lost amongst it). It would definitely help to have some of our class PowerPoint slides organized such as these.
ReplyDeleteBrittany,
ReplyDeleteI especially appreciated your wikipedia note taking. And written in that formatted style it makes it easier to understand and to remember all the numerous points that the article made. I think that article had the most amount of facts and information within it. Thanks, for doing it that way Brittany!