Changes between Version 43 and Version 44 of VIQUEN


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Timestamp:
08/19/10 09:29:16 (9 years ago)
Author:
nixdell
Comment:

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  • VIQUEN

    v43 v44  
    1010== Query-building Environment ==
    1111[[Image(screenshot_qb_1.png, left)]] [[BR]] [[BR]]
    12 The query-building environment is used to graphically formulate semantic queries. The user interface, shown above may be divided into four main parts: [[BR]] [[BR]]
     12The query-building environment is used to graphically formulate semantic queries. The user interface, shown above, may be divided into four main parts: [[BR]] [[BR]]
    13131. The toolbar and system menus [[BR]]
    14142. The operation library palettes [[BR]]
     
    3939[[Image(start_node.png, left)]] A query must begin with a Start node, which indicates the point from which the system will start to compile the query. By positioning the Start node appropriately, different chunks of the query may be executed individually before combining them into a larger query. After the Start node, the query is defined by adding one or more subquery blocks to the workspace.
    4040
    41 [[Image(input_node.png, left)]] Each subquery block begins with an Input node, which defines the data sources to be used as input to the query. Clicking on the "Manage data sources" button will bring up a list of available data sources which may be selected for inclusion in the query.
     41[[Image(input_node.png, left)]] Each subquery block begins with an Input node, which defines the data sources to be used as input to the query. Clicking on the "Select input sources" button will bring up a list of available data sources which may be selected for inclusion in the query.
    4242
    4343[[Image(output_node.png, left)]] A subquery block must end with an Output node, which specifies the output graph for the block. This output graph may easily be added to the list of potential input data sources by clicking on the "Add to data sources" button and specifying a name for the output graph.