Crosstab query, generally; It is the process of questioning the witness of the other party in order to reveal the legal truth, the reliability and the contradictions in the witness statements. The application of this inquiry process varies according to countries. However, in general, the system is used in the broadest sense, in Anglo-Saxon and Continental European law. The interrogation process by the party calling the witness is called direct interrogation, and then the interrogation of the witness not by the party calling him but by the other party is also called a cross-examination.