In the previous chapters, we focused on report integration and web services, but we need to go back and have a look at what lies underneath those reports - the data your report is based on and how Crystal Reports.NET uses this data.
In this chapter, we will be looking at the way Crystal Reports.NET works with different data sources and how it interacts with ADO.NET. This will include:
Understanding data access
Working with data sources
Creating SQL commands and expressions
Working with ADO.NET
At the end of this chapter, you will have an understanding of how Crystal Reports.NET interacts with different data sources, the options for working with these data sources, and using ADO.NET as a data source for your report development.