English: Now, let us choose the other way round suppose its [] [] [], then [] to [] is fine [] to [] is fine, but then [] should be So, essentially if there is a cycle, then this essentially saying that [] must be before [] it must be before [] which must be before something else must be before [], which can never happen which kept; that means, there is no serial schedule possible, which means that if there is a cycle it is not conflict serializable.And the other way round can also shown is that if it is conflict serializable, then if a schedule is conflict serializable; that means, that it is equivalent to some order [] [] [] etcetera it is conflict serializable it is equal to some serial schedule; that means, the only edges that can be present is from [] to [] and [] to [] they cannot be any back edge from [] []; otherwise it not equivalent; that means, there cannot be any cycle.
Telugu: తప్పనిసరిగా ఒక చక్రం(cycle) ఉంటే, తప్పనిసరిగా ఏమి ఉండాలంటే [] అనేది [] కన్నా ముందు జరగాలి, [] అనేది [] కన్నా ముందు జరగాలి,అదే విధముగా [] అనేది [] కన్నాముందు [], కానీ అది ఎప్పుడూ జరగదు; అంటే, సీరియల్ షెడ్యూల్ (serial schedule) సాధ్యం కాదు, అంటే ఒక చక్రం(cycle) ఉంటే అది సంఘర్షణ సీరియలైజబుల్(conflict serializable) కాదు.