Muddiest Point Week 13

Is it better to use XML schema rather than DTD? Or do you use DTD in XMLschema. I'm a bit confused.

Week 14

Cloud Computing
-some vendors same its virtual servers on the internet
-others say anything outside the firewall is cloud computing
Think about what IT always needs
-a way to increase capacity or add capabilities on the fly without investing in new infrastructure, training new personnel, or licensing new software.

Types of Clouds

1. SaaS: single app through browser to thousands-no upfront investment

2.Utility: storage and virtual servers access on demand

3.Web Services: APIs to exploit functionality

4. Platform as service: development envrionments as a service, build own apps

5. MSP: app exposed to IT rather than end users, virus scanning

6. Service commerce platforms: service hub that users interact with

7. Internet integration


In Vermont, patron privacy was challenged by police who were conducting an investigation. They wanted computers from the library, but were told they need a court order to ensure that privacy of others would be protected. At first it seemed that the officer would cooperate, but it became apparent that he didn't want to speak to a judge. They eventually got a court order.


Key Trends in Next Gen library

1. Communication systems change information access practices

2. All of today's new technology will be replaced by new technology

3. Small particle storage not perfect, but soon

4. Search technology will become more complicated

5. The need for speed changes library patrons lifestyles

6. Transition to verbal society

7. People want global information

8. New global systems

9. Product->experience economy

10. Libraries will be center of culture

Recommendations

Evaluate experience
Embrace new tech
Preserve mems of communities
Experiment with creative spaces

Muddiest Point Week 12

Not really a question but a comment. I'm glad that we went through XML so thoroughly. I've been doing HTML and CSS, and I know how to structure it, even if I'm not the greatest graphic designer in the world. Previously, my classes have only mentioned XML in passing, so I was never really certain as to what it was. I'm glad to have an actual idea now.

Week 13:XMLII

Document Type Definitions
-way to describe the language of document. Same way you learn a grammar for a spoken language.
-internal and external

Document Type Declaration
-DOCTYPE
-shows doc should conform to DTD
-<!DOCTYPE   >
-root element must match exactly
-XML IS CASE SENSITIVE

System Identifier
-allows you to to specify location of external file w/ DTD
-keyword SYSTEM and URI

Public Identifiers
-2nd mechanism for locating DTD
-keyword PUBLIC
-entry in catalouge
-cant combine two diff vcabs in same doc

Use DTD that are widely accepted-easier to integrate
error free
simple URI
correct media type
provide documentation

Three Parts
-element declaration:must declare each element that appears
-attribute declarations: declare list of allowable attr for each element
-entity declarations

DTD Limitations
-bad support for XML namespace
-poor data typing
-limited content model desc


XML Schemas
-use same XML syntax
-support namespace rec
-enables text element content validation
-easily create complex and reusable content
-enable modeling of programming