Report Data pane in SQL Server Reporting Services (SSRS)
Use the Report Data pane to view the currently defined parameters, data sources, datasets, field collections, and images in your report. The Report Data pane displays a hierarchical view of the items that represent data in your report. The top level nodes represent built-in fields, parameters, images, and data source references. Expand each node to view the data items. For example, when you expand a data source node, the datasets defined for that data source appear. When you expand a dataset, its field collection appears. Drag items to the report design surface to link data with report items on the report page.
Options
Built-in Fields
Represents fields provided by Reporting Services that are commonly used in a report, such as the report name or page number. For more information, see Built-in Collections in Expressions (Report Builder and SSRS).
Parameters
Represents the collection of report parameters, each of which can be single-valued or multivalued. For more information, see Report Parameters (Report Builder and Report Designer).
Images
Represents the set of images used in the report. For more information, see Images (Report Builder and SSRS).
Data source
Represents a single data source reference to an embedded data source or to a shared data source. In SQL Server Data Tools (SSDT), shared data sources appear in Solution Explorer under the Shared Data Sources folder. A data source specifies one of the data source types supported by Reporting Services. A data source is the parent node for the collection of datasets based on it. For more information, see Create data connection strings - Report Builder & SSRS .
Dataset
Represents a single dataset. A dataset is the parent node for the collection of fields specified by the query and including any calculated fields. Reporting Services supports query designers to help you specify a query. For more information, see Report Datasets (SSRS) and Query Design Tools (SSRS).