Forward and backward chaining in declarative networks

Question 1

Forward chaining

Answer 1

updates the target property value when a source property value changes.

Question 2

Backward chaining

Answer 2

a target property value is not automatically updated when other declare expressions in a network update their target values.

Question 3

When does an expression using backward chaining update its target property?

Answer 3

When the application references the property by name

Question 4

When can forward chaining have a negative impact on performance?

Answer 4

When an expression uses many source properties that change frequently