How old does a child have to be to witness in court in Canada?

In Canada, there is no specific age requirement for a child to testify in court, but the judge has the discretion to determine whether a child is competent to give evidence. Generally, children as young as 7 years old can be considered capable of testifying, provided they understand the obligation to tell the truth. The process often involves assessing the child's understanding and ability to communicate effectively in court.