Data source,Dataset Create ,Design report List report in SSRS

 Data Source:

Data source means a connection string to a particular db system. In ssrs we have two types of data sources.

1. Ordinary Data source
2. Shared Data Source

Ordinary Data source:

Data source connection string maintain in particular report. It’s not reusable in the product.

Shared Data Source:

Data source connection string maintains in connection file (rds).
It can be reusable for multiple reports in the application.

In SSAS and SSIS2008 we have only shared Data source.

Dataset:

Dataset means in-memory result set structure prepared based on query or stored procedure.
Dataset populated with actual rows at the time of report execution.

A report requires at least one dataset.
A report can use multiple datasets.

List:
 A list data region repeats with each group or row in the report dataset.
List region does not have any built -in – layout.
It’s free from layout.
List can display detailed data and aggregated data with the help of other report items.
List can support only one grouping that is on entire list.
A report item placed in the list can be repeated from each row in the dataset/each group in the dataset.

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