3.4. Data flow sources
Whenever two components must interact, whether they are separately developed components, or whether a single component is iteratively executed over time, it is likely that there will be a need to flow data from one to the other.
Like the first two sections, this section is divided into subsections describing data sources associated with each of the three tiers:
Browser
Web application server
Enterprise servers
And as with control flow mechanisms, we show how the choice of data source can have a huge impact on the overall performance and integrity of the application.
3.4.1. Browser-maintained data flow sources
There are a number of browser-maintained data sources that we will discuss in this section:
URL query string
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