Crystal Data Object

The Crystal Data Object (CDO) is an ActiveX data source that allows you to define fields and records at runtime based on data that exists only at runtime. Through CDO, any data can become a virtual database and can be reported on using the power of the Report Designer Component. The Crystal Data Object does not support Memo or Blob fields.

CDO, like DAO and ADO, is based on the Component Object Model (COM). Any development environment that supports COM interfaces can dynamically generate a set of data for a report without relying on a database that exists at design time.

Applications that produce data that does not exist outside of the running application have been unable, until now, to take advantage of the most powerful reporting features in the industry. CDO, however, solves that problem. For instance, applications that monitor system or network resources, or any constantly operating environment, can produce a current report on such information at any time. No longer does data need to be dumped to a separate database before analysis. Through CDO, the Active Data Driver, and the Report Designer Component, analysis is instant and up-to-date.

The following topics are discussed in this section:



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