Under-defined vs fully-defined vs over-defined in Solidworks - Formula Comparison Trace

Sample Data

This data shows different sketch elements in SolidWorks with their applied constraints and resulting definition status.

Cell	Value
A1	Sketch Element
B1	Constraints Applied
C1	Status
A2	Line 1
B2	Length only
C2	Under-defined
A3	Rectangle
B3	Length, Width, Horizontal & Vertical constraints
C3	Fully-defined
A4	Circle
B4	Radius, Center fixed, Extra coincident constraint
C4	Over-defined

Formula Trace

Status = IF(Constraints < Required, "Under-defined", IF(Constraints = Required, "Fully-defined", "Over-defined"))

Step 1: Check constraints for Line 1: Length only

Step 2: Check constraints for Rectangle: Length, Width, Horizontal & Vertical constraints

Step 3: Check constraints for Circle: Radius, Center fixed, Extra coincident constraint

Cell Reference Map

   A           B                          C
1 Sketch    Constraints Applied         Status
2 Line 1    Length only                Under-defined
3 Rectangle Length, Width, Horizontal & Vertical constraints Fully-defined
4 Circle    Radius, Center fixed, Extra coincident constraint Over-defined

Cells A2:C4 are referenced to determine the status of each sketch element based on constraints.

Result

   A           B                          C
1 Sketch    Constraints Applied         Status
2 Line 1    Length only                Under-defined
3 Rectangle Length, Width, Horizontal & Vertical constraints Fully-defined
4 Circle    Radius, Center fixed, Extra coincident constraint Over-defined

The final status column shows if each sketch element is under-defined, fully-defined, or over-defined based on constraints.

Sheet Trace Quiz - 3 Questions

What status does a sketch have if it has fewer constraints than required?

A Fully-defined

B Under-defined

C Over-defined

D Undefined

Key Result

Status depends on comparing applied constraints to required constraints: less means under-defined, equal means fully-defined, more means over-defined.