文件名称:
Applied Microsoft .Net Framework Programming
开发工具:
文件大小: 4mb
下载次数: 0
上传时间: 2007-12-13
详细说明： Over the years, our computing lifestyles have changed. Today, everyone sees the value of
the Internet, and our computing lifestyle is becoming more and more dependent on Webbased
services. Personally, I love to shop, get traffic conditions, compare products, buy
tickets, and read product reviews all via the Internet.
However, I’m finding that there are still many things I’d like to do using the Internet that aren’t
possible today. For example, I’d like to find restaurants in my area t hat serve a particular
cuisine. Furthermore, I’d like to be able to ask if the restaurant has any seating for, say, 7:00
p.m. that night. Or if I had my own business, I might like to know which vendor has a
particular item in stock. If multiple vendors can supply me with the item, I’d like to be able to
find out which vendor offers the least expensive price for the item or maybe which vendor
can deliver the item to me the fastest.
Services like these don’t exist today for two main reasons. The first reason is that no
standards are in place for integrating all this information. After all, vendors today each have
their own way of describing what they sell. The emerging standard for describing all types of
information is Extensible Markup Language (XML). The second reason these services don’t
exist today is the complexity of developing the code necessary to integrate such services.
Microsoft has a vision in which selling services is the way of the future—that is, companies
will offer services and interested users can consume these services. Many services will be
free; others will be available through a subscription plan, and still others will be charged per
use. You can think of these services as the execution of some business logic. Here are
some examples of services:
§ Validating a credit card purchase
§ Getting directions from point A to point B
§ Viewing a restaurant’s menu
§ Booking a flight on an airline, a hotel room, or a rental car
§ Updating photos in an online photo album
§ Merging your calendar and your children’s calendars to plan a family vacation
§ Paying a bill from a checking account
§ Tracking a package being shipped to you ...展开收缩
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