1, Database
This article is comprehensive and covers many aspects of database. There are many professional term in this article. It is a little hard for me to read, since I have no computer science background.
2, Anne J. Gilliland. Introduction to Metadata, pathways to Digital Information: 1: Setting the Stage
we have talked much about metadata. In Table 1, I found that the set of MARC is data structure standard and AACR is data content standard. What is the difference between MARC and AACR? MARC is machine-readable language. But librarians still have to input data to the system.
What is the difference between data and metadata?
3, Eric J. Miller. An Overview of the Dublin Core Data Model
The objective of Dublin Core is to define a simple set of data elements so that authors and publishers of Internet documents could create their own metadata records with no extensive training. Do human beings write Dublin core or computers write them? I opened the homepage of Dublin Core, subject descriptions are written by XML. It is important to learn XML for librarians, we have to not only figure out the traditional and machiedable catalogues, but also grasp some computer languages. It is interesting to learn Dublin Core.
Thursday, September 17, 2009
the muddist point in Week3
1, what are the differences between "Open Source Software" and "public domain software"? They are both free to modify, copy and redistribute. I can not find any difference.
2, I am confused about BIOS. Dose BIOS exist before we install operating system? Where does BIOS come? It also has interface. What is the relations between BIOS and operating system? Why computers need BIOS?
3, Does the existing virus have some relations with open source? Is it because the code is open? Generally speaking, free software and open software are less safe than software that charges fees.
4, Something strange. I have to pay fees to get Adobe Reader software in U.S.A, but I can download free Adobe Reader software from Chinese website. Why? Dose this free software have copyright? Is it legal?
2, I am confused about BIOS. Dose BIOS exist before we install operating system? Where does BIOS come? It also has interface. What is the relations between BIOS and operating system? Why computers need BIOS?
3, Does the existing virus have some relations with open source? Is it because the code is open? Generally speaking, free software and open software are less safe than software that charges fees.
4, Something strange. I have to pay fees to get Adobe Reader software in U.S.A, but I can download free Adobe Reader software from Chinese website. Why? Dose this free software have copyright? Is it legal?
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