f*r
发帖数: 3968 | 1 看了半天，没看明白
没看出什么特别了不得的好处啊
谁给讲讲？ | l***h
发帖数: 139 | 2 ??? read this board from beginning carefully.
It's for data sharing, and the data itself has "meaning" to be understood
by third-party applications.
How HTML can do that? How EDI do that? They have limitations.
XML rules.
【在 f*r 的大作中提到】
: 看了半天，没看明白
: 没看出什么特别了不得的好处啊
: 谁给讲讲？
| f*r
发帖数: 3968 | 3 我数据放Database里面
放XML里干什么？
【在 l***h 的大作中提到】
: ??? read this board from beginning carefully.
: It's for data sharing, and the data itself has "meaning" to be understood
: by third-party applications.
: How HTML can do that? How EDI do that? They have limitations.
: XML rules.
| g*****e
发帖数: 16 | 4 这里指广义的数据, 例如文档, 货单等等database不易存储
而Text or Html又无法结构化表示的数据.
如果Html文档转用Xml表述就更容易实现精确检索, 如果email, html, database
等等应用都用Xml表述, 就可以进行更加有效的数据共享
简单得说XML就是数据格式的标准化. 数据大同吧. :)
【在 f*r 的大作中提到】
: 我数据放Database里面
: 放XML里干什么？
| s*k
发帖数: 144 | 5 Though the standard definition of XML
is eXtensible Markup Language, I still
prefer to regard it as data Exchage Markup Language.
In essence, XML is a standard ML for data exchange.
Though all your data can be structured and stored in
database, it is awful for exchange them through Internet
for every database has its own interface, grammer and schema.
So it need a standard way to represent them and transfer them.
XML is based on http, and use well accepted http to transfer
content.
Though HTML i
【在 g*****e 的大作中提到】
: 这里指广义的数据, 例如文档, 货单等等database不易存储
: 而Text or Html又无法结构化表示的数据.
: 如果Html文档转用Xml表述就更容易实现精确检索, 如果email, html, database
: 等等应用都用Xml表述, 就可以进行更加有效的数据共享
: 简单得说XML就是数据格式的标准化. 数据大同吧. :)
| q*j
发帖数: 156 | 6 据说今年的ICDE上, 除了Widom, 数据库界的大牌儿们一致说XML不好.
【在 s*k 的大作中提到】
: Though the standard definition of XML
: is eXtensible Markup Language, I still
: prefer to regard it as data Exchage Markup Language.
: In essence, XML is a standard ML for data exchange.
: Though all your data can be structured and stored in
: database, it is awful for exchange them through Internet
: for every database has its own interface, grammer and schema.
: So it need a standard way to represent them and transfer them.
: XML is based on http, and use well accepted http to transfer
: content.
| s*k
发帖数: 144 | 7 yeah, because it is difficult to make a
standard with selfishness of companies.
As the same reason, Java is not good,
windows is not good.
【在 q*j 的大作中提到】
: 据说今年的ICDE上, 除了Widom, 数据库界的大牌儿们一致说XML不好.
| f*r
发帖数: 3968 | 8 接着不明白，呵呵
那么说把我数据不放Database里面了
都塞XML里面去
可是我这XML文件就太大了罢
这么大的文本文件，处理速度能快么？
【在 q*j 的大作中提到】
: 据说今年的ICDE上, 除了Widom, 数据库界的大牌儿们一致说XML不好.
| q*j
发帖数: 156 | 9 some file, like a series of book, it's hard to store in database directly,
and XML is good for this kind of semi-structured data.
for example, a query like find all the second section of second chapter
of the book written by far, this query is not doable if the entire book
is just stored as a CLOB.
【在 f*r 的大作中提到】
: 接着不明白，呵呵
: 那么说把我数据不放Database里面了
: 都塞XML里面去
: 可是我这XML文件就太大了罢
: 这么大的文本文件，处理速度能快么？
| f*r
发帖数: 3968 | 10 这么说不是什么都适合搞成XML了？
【在 q*j 的大作中提到】
: some file, like a series of book, it's hard to store in database directly,
: and XML is good for this kind of semi-structured data.
: for example, a query like find all the second section of second chapter
: of the book written by far, this query is not doable if the entire book
: is just stored as a CLOB.
| q*j
发帖数: 156 | 11 there're people saying things like that. :)
【在 f*r 的大作中提到】
: 这么说不是什么都适合搞成XML了？
| s*k
发帖数: 144 | 12 technical speaking:
XML is suitable for structured non-relational data with requirement
of exchangible.
The benefit of XML is it make exchange data easier.
If you feel query and store is more important, you may
use document database. Some products that use document database
technology heavily are Lotus Notes and Microsoft Exchange Server.
directly,
chapter
book
【在 f*r 的大作中提到】
: 这么说不是什么都适合搞成XML了？
| l***h
发帖数: 139 | 13 maybe because Gates pushes XML enthusiastically.
【在 q*j 的大作中提到】
: 据说今年的ICDE上, 除了Widom, 数据库界的大牌儿们一致说XML不好.
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