exam qs

Question 1

what is data mining

Answer 1

finding patterns within large quantities of data

Question 1

what is pobrlem recognition

Answer 1

identify what the problem is

Question 2

what is performance modelling

Answer 2

testing the behaviour of system before it is used

Question 3

what is another benefit of visualization exclusing the fact that its easy to understand

Answer 3

can explain complex situations

Question 4

3 features of an IDE

Answer 4

underlines syntx errors before running- saves time
breakpoints - check the values of variables
step mode - allows you to watch the variables as each line executes

Question 5

what is the difference between by value and by reference

Answer 5

the value will noit be overriden
a copy will be made

Question 6

what are the similarities between class and records

Answer 6

both store data of different types

Question 7

what are the differences between class and records

Answer 7

record is a data structure where as a class is a template for making data structures