InteractiveSparqlQueryBuilderOverview

Basic iSPARQL Overview

Go to iSPARQL demo page.
By default, user name demo and password demo should be shown in the Login form. Click "Ok".
You will now see the iSPARQL home page, with tab "QBE" opened and the default graph elements shown on the Canvas.

The iSPARQL Menu Bar consists of the following Menus:

File: From here you can
- Reset the QBE Canvas;
- Open already saved .rq or .isparql file;
- Save / Save As the current workflow.
Help: contains useful Virtuoso documentation links and information about the iSPARQL ackage.

The QBE tab is opened by default after successful login to iSPARQL. It consists of the following items:

Toolbar: The toolbar items have tooltips, so you may take a look at each of them. At the far right side of the toolbar is the Data Source URI field. By default its value is taken from the virtuoso.ini, SPARQL section,"DefaultGraph" keyword:
```
http://demo.openlinksw.com/dataspace/person/demo
```
Canvas: shown below the toolbar, on the left side of the page.
Schemas: shows the imported schemas. Divided by bound and unbound. For every schema are shown in tree-mode view its Classes and Properties.
Node are: Shows properties for selected Node form the Canvas.
Query options: Max Rows: it is shown under the Canvas. You can set Resultset Max Rows Limit from the drop-down list.
Distinct: checked by default.
Set SPARQL Query Type (SELECT, CONSTRUCT, DESCRIBE, INSERT, DELETE)
Sponger options:
- Set SPARQL Endpoint to which queries will be directed.
- Data dereferencing options
- Caching Schemes
- Nodes Retrieved
- Nodes Crawled
- Path Traversal Schemes
  - Default setting
  - Follow all properties
  - Follow Properties
- Bound Variables

Here you can build your queries, manually setting Graph value, or adding new one from tab Named Graphs

Toolbar: The toolbar items have tooltips, so you may take a look at each of them. In common the items are as follows:
- Reset: Clears the SPARQL Query text-area;
- Open: Opens the Virtuoso WebDAV Browser, from which you can select a file containing a specific SPARQL query.
- Save: Opens the Virtuoso WebDAV Browser to save the current query to a DAV location, as a file with .rq extension. You can change the extension to .isparql.
- Save As : Opens the Virtuoso WebDAV Browser to save the current query to a DAV location, as a file with any extension.
- Run Query: Causes the query to be executed.
- Visualize: Shows the built graph in the QBE Canvas.
- Get from QBE.: Gets the query corresponding to the graph in the QBE Canvas.
The SPARQL Query area displays your current query and lets you modify it manually and/or using the drop-down lists for Prefixes, Templates, and Statement Help.

Shows the results of executing the SPARQL Query.

It consists of several sub-tabs:

Result tab: Opened by default, it shows the result found from executing the SPARQL query.
SPARQL Params tab: Shows the values of SPARQL Query parameters .
Response tab: shows the response information of executing the SPARQL query.
Query tab: shows the SPARQL query.
With the blue arrows shown after the Query tab you can navigate among the queries you have already executed.
The graph-like icon with tooltip "Load Query to QBE" redirects to the QBE tab with the built graph in the Working Pane.
The edit-document-like icon with tooltip "Load Query to Advanced" redirects to the Advanced tab where you can edit your query.