Increasingly XML Is Replacing Complex ASP In The Middle Tier
However information entropy is likely to become a significant factor in the corporate workspace before too long even restricting the domain to corporate outranges.
In the near term, mill’s use in managing documents is likely to be oriented towards simple indexing schemes that work by mirroring file structured in xml however as xml concept editor and documents filer become more prevalent it is likely that many documents will be archived in an xml format. Directory structures as mentioned before currently are most frequently representing using the LDAP protocol however the hierarchical structure of LDAP could be fairly easily modified in to an xml format, which means that the same system for representing document information could also work with computer state information. In a similar fashion as database become more integrated with xml standards application that can translate between SQL and the path language will become more common. SQL is not a language that lends itself to use on the internet its structure is verbose the level of information that you need in order to perform a basic query can several lines or pages and the data that is contained with in field is often of a sensitive or protected nature that you do not necessarily want exposed. Typically ASP acts as a buffer between the data and the outside world, but because each ASP essentially has to be generated from scratch this can make for expensive web interfaces.
The xml information can be easily changed from one format to another it can provide both simple and complex validation of data and it can determine through the use of an expensive write to the database. Moreover with the ability to integrate with messaging an XML solution can take the data that is created from with a SQL query and export it to the client as a single unit, without necessarily forcing the entire to refresh itself.
One advantage to this approach over traditional OLE is that OLE requires that both applications be run simultaneously. An XML stream uses the relatively lightweight MSXML component instead and does not even require that the data come from excel.
This integration becomes even more important when the source of the data is located on a machine different then the consumer of the data. With XML it is possible to use Excel as a remote server, generating data to a power point presentation or perhaps to a vision document or may be even heavens forefend to a java applet running in a Netscape browser. From independent manner that points to one of the principle uses of XML in the future. A related venue to this is the area of messaging. Web connections are not always possible especially if you are in a travel intensive occupation such as seals. Messaging lets a salesperson write relent information, such through a web browser or other client application into a messaging cache if they return to information that wad cached on the client. While sophisticated coaching system are needed for standard client application, if you are simply going through a web interface you can leverage XML’s persistence capabilities and structuring to store information until the transaction can be completed.
The barrier hearer between data and programming language blurs, as I indicate earlier in this chapter, and that point survives to highlight yet another axiom that XML introduces.
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