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13. Dynamic Documents > An Overview of Dynamic Documents

An Overview of Dynamic Documents

Recall from our discussion in Chapter 1 that the client browser initiates data flow on the Web by contacting a server with a document request. The server honors the request by downloading the document. The client subsequently displays the document’s contents to the user. For normal web documents, a single transaction initiated from the client side is all that is needed to collect and display the document. Once displayed, however, it does not change.

Dynamic documents, on the other hand, are the result of multiple transactions initiated from either or both the server side and the client side. A client-pull document is one that initiates multiple transactions from the client side. When the server is the instigator, the dynamic document is known as a server-push document.


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