VCE Software Development U3O1 Definitions Worksheet: Requirements and design tools to Naming conventions and internal documentation (Modules 10–47)
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Key terms
Write what each term means, in your own words.
1
data dictionary
2
studentAge, integer, 2 digits, age in years, 15, 11 to 19
3
class diagram
4
object description
5
GST_RATE = 0.1
6
sequence
7
nested if
8
count += 1
9
naming convention
Answer Key
VCE Software Development U3O1 · Modules 10–47 · Student wording will vary for definitions
1data dictionary — A table listing each data element with its name, data type, size or format, description and validation rule, so everyone uses the data the same way when coding and testing.
2studentAge, integer, 2 digits, age in years, 15, 11 to 19 — One data dictionary row for a data item: name, data type, format or size, description, example value and validation rule. Written from a requirement or IPO chart.
3class diagram — A box listing a class's name, attributes and methods. An arrow joins a child class to the parent it inherits from. You draw it as a plan before writing the code.
4object description — A design table for a class that lists its name, its attributes with data types, and its methods with their parameters and purpose.
5GST_RATE = 0.1 — A constant: a named value set once and never changed while the program runs. Written in UPPER_CASE by convention, it replaces magic numbers and is easy to update in one place.
6sequence — A control structure where statements run one after another, top to bottom, so changing their order can change the result.
7nested if — An if statement indented inside another if block. The inner condition is only checked when the outer condition is True.
8count += 1 — Set count = 0 before a loop, then use count += 1 inside it to add 1 each repeat. Use total += value to build a running total.
9naming convention — An agreed pattern for naming variables, functions and controls so code is readable, consistent across a team and easier to maintain and debug.