iterative development - set stages which are followed in order. can go back and repeat a previous stage if error/mistake is found. Client only involved at analysis stage, agile development - Development broken down into small chunks called 'sprints' at the end of each sprint a new feature/function is designed coded and tested. Client heavily involved throughout, scope - Deliverables of the project, Boundaries - limits of the program, record, array of records - dim personDetails(9) as person, modular code - advantages of a certain type of code, Many programmers can work on the same program at once a module can be re used in different programs, errors can be localised to a specific module, chr - What predefined structure is this Result = chr(65), execution - What type of error is this the program runs but then crashes while it is running common examples are trying to divide by 0 or trying to pen a file that doesnt exist, watchpoint - The program is paused when a specific condition is met to allow the programmer to check the value of the variables,

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