Because geometry and attributes are stored separately, one geometry features class, such a point, can reference various attribute feature classes, such as manhole, cover, fitting. For line features this allows for two different line splitting methods: soft split and hard split.
Wastewater data model: Relation between section and line feature class
Using a workflow you can decide whether the line is soft split or hard split, thus determining how the system handles the attribute data of the two resulting features.
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Split |
Description |
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Soft Split |
A soft split breaks the line into two separate features, each with its own geometry (WW_LINE) but sharing the same attribute data (WW_SECTION). Use soft split for point features of minor importance and when the attributes of the section do not change. |
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Hard Split |
A hard split breaks the line into two separate features, each with its own geometry (WW_LINE) and attribute data (WW_SECTION). In a hard split the attribute data is not shared. Use hard split for point features of major importance or if the attributes of the section change, for example diameter, material, model. |
Wastewater data model: Soft and hard split
For more information, see Waste Water Topologies.