User`s guide

Designing Optimized Web Reports
6.1 Overview
Whether you distribute your enterprise reports over a local network, a corporate Intranet, or the Web,
you can use Crystal Reports' powerful, built-in performance features to deliver web reporting speed.
Crystal Reports automatically provides these major performance advantages—even if you don't apply
any of the strategies set out in this section:
• Page-on-demand technology
Page-on-demand report access lets users download only the specific report pages they need to
see, thus improving response times and reducing web traffic. Further, placeholders and partial page
technology allow you to view report pages and data over the Web immediately, without having to
wait for the processing of large objects, such as graphics and subreports.
• Optimized, multithreaded Report Engine
The Crystal Report Engine's multithreading capabilities and thread-safe database drivers allow you
to continue working on your important tasks, while many other operations are processed
simultaneously in the background. The Report Engine also minimizes the number of passes made
through the data, speeds up processing with improved memory management, and handles subreports
and parameters as efficiently as possible.
In addition to these built-in features, the Key strategies for optimizing web reports discussed in the
following sections bring additional performance benefits, which are often substantial. When you design
new reports (or improve reports created in older versions of Crystal Reports) in accordance with these
strategies, reports run faster and tie up fewer processing resources. Consequently, report users can
easily access the data they need—faster than ever.
Tip:
If you're new to web reporting, or to reporting in general, reading this section will prepare you for future
reporting tasks—you'll gain important insight into designing faster, better reports.
Note:
Understanding databases and how they work is often important when considering performance. See
Databases overview for background information.
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Designing Optimized Web Reports