User`s guide

database hits. (The Report Application Server provides on-demand reporting, so every viewing
request results in a separate query on your database.)
• Versioning
Versioning works closely with scheduling to store "instances" of a report. Versioning not only reduces
the number of database hits required to serve users, but also allows you to keep an archive of report
instances for historical reference.
• Clustering
SAP BusinessObjects Business Intelligence platform incorporates proven clustering and
load-balancing technology to help you deliver a highly available, reliable information delivery system.
• Scalability
SAP BusinessObjects Business Intelligence platform is built on a distributed, multi-server architecture,
allowing you to scale up on a single machine (by adding processors) or scale out over multiple
machines to handle heavier user loads.
• Management
SAP BusinessObjects Business Intelligence platform incorporates extensive administration and
management controls that allow you to organize content, set up complex schedules and security,
and tune the system for optimal performance.
• External (third-party) authentication
SAP BusinessObjects Business Intelligence platform allows you to leverage your existing security
system to manage users and groups. All authentication can be delegated to a third-party NT or
LDAP system.
6.2.1 Evaluation times for date functions in SAP BusinessObjects Business Intelligence
platform
Different date and time functions available in Crystal Reports are evaluated at different stages during
report processing. Some are evaluated when a scheduled report is processed, or when a report instance
is refreshed: this evaluation time is known as "WhileReadingRecords." Others are evaluated each time
a report page is formatted for display in a report viewer or a browser: this evaluation time is known as
"WhilePrintingRecords."
If you use SAP BusinessObjects Business Intelligence platform to generate report instances and notice
that date or time functions are not evaluating to the values that you expect, consider the following:
• The current date and time are always read from the clock that is locally accessible to the Report
Engine—that is, from the clock on the computer that processes the report. In SAP BusinessObjects
Business Intelligence platform , the Job Server processes scheduled reports against the database,
and the Page Server processes on-demand reports against the database. The Page Server also
formats individual pages of report instances when users view them.
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Designing Optimized Web Reports