Concept of GIS portal

ESRI introduced the concept of GIS portal at ArcGIS 2004 User Conference in China. In fact, the main points are as follows:

1. The classification and search portals of GIS data are equivalent to the Yahoo and Google concepts of general information resources. Therefore, data users can search and query the required data;
2. Some concepts of web services and e-commerce are applied (meaning not very accurate). The data is generally not provided by a portal, but is registered by the data owner in this portal, using metadata (metadata) to describe the data.

In this way, a large amount of space data can be shared and used, instead of having to produce a large amount of data on the one hand, and storing the data in the database of their respective owners, which is inaccessible to others, most users do not even know the data.

So its form can be:

1. Portal websites like Yahoo provide classified data browsing. You can connect to the data owner's website to obtain data (Web, FTP, etc .)
2. Through the distributed structure, the GIS portal obtains the data format and other information through metadata, which is directly displayed on its website or provided in some way. This is exactly where the Web service can be used, the GIS portal website obtains data from data providers through web services or other methods, and provides services through web or web services.

In short, this is a good concept. Due to its particularity, spatial data has a huge amount of data. Therefore, this kind) and other methods can solve the problem of space data sharing.

To put it simply, the GIS portal is also an application of modern enterprise-level application architecture (distributed and service-oriented) in GIS technology.

Incorrect. please correct me. Welcome to discuss it.