Most reports display some data. Typically, this data is obtained from databases. Therefore, the report has a connection to the data source in order to have a list of available tables and fields, as well as the data itself. But what if at the time of writing the report, you only had a local database that you created a connection to inside the report. Then the report will not work properly. We need a valid connection. There are two ways out of this situation: use a data source from a user program, or replace the connection line in the report.
The first method is well known to you. You need to create a connection in the application and then log in to the report. Then, when you design a report, you can choose this source of Alias. On the one hand, this is convenient - changing the connector does not affect the report. No matter where the report gets the data, as long as the table and field names, data types, and data types provided in the template are the same. The drawback of t ...