Query Interface

To create a restriction, the user must follow this steps:

1. Select the type of restriction
• Attribute,
• Spatial.
2. Define a restriction.
• (+) Add a new restriction.
3. Down below is presented all restrictions defined. This component has two elements:
• Table: List of restrictions
• SQL: Restriction defined as SQL (only for visualization purposes of the restriction generated).

For restrictions by attributes, the fields to be defined are:

• Property: Attribute to be restricted.

• Operator: List of operators supported for the type of selected data.

• Value

• Property: Uses another attribute of the dataset to build the restriction.

• Value: Uses a specific value to create the restriction.

The result for this restrictions is shown in below figure.

For spatial restrictions, the fields to be defined are:

• Geometry Attribute: Attribute with the geometric representation of the selected data set.

• Operator: List of operators supported for the type of selected data.

• Layer: Layer to be confronted with the restriction defined.

• Use Selected Objects: Option used if the user wants to use the selected dataset geometries to build the restriction.

For this example the user creates a spatial restriction and use the selected dataset geometries.