The table shown below displays the details of the roles played by actors/actresses in films. The table shown above is susceptible to update anomalies. Provide examples of how insertion, deletion, and modification anomalies could occur on this table.

film No fTitle dirNo director actorNo aName role timeOnScreen F1100 Happy Days D101 Jim Alan A1020 Sheila Toner Jean Simson 15.45 D101 Jim Alan A1222 Peter Watt Tom Kinder 25.38 D101 Jim Alan A1020 Sheila Toner Silvia Simpson 22.56 F1109 Snake Bite D076 Sue Ramsay A1567 Steven McDonald Tim Rosey 19.56 D076 Sue Ramsay A1222 Peter Watt Archie Bold 10.44