5.1 The travel agency uses the interface below as a booking form for holiday accommodation - NSC Information Technology - Question 5 - 2017 - Paper 2

Verified data indicates that the user has confirmed the correctness of the data they have entered. This can involve reviewing the input against the requirements or checking it for consistency before it is processed or stored.

The component suggested for data input in QUESTION 5.1.1, such as a dropdown menu for accommodation type, ensures valid data entry by restricting users to a predefined list of options. This minimizes the risk of invalid entries and enforces data integrity by only allowing acceptable values.

A logical error occurs when the program runs without crashing, but it produces incorrect results. This often happens due to flawed logic in the algorithm or incorrect assumptions about how the data should be manipulated.

In the statement arrVisitors[x, y] = total, replace x with counter1 and y with 2. This ensures that the correct total for visitors is stored in the appropriate column of the 2D array.

The statement should be inserted in option A, which is between lines 6 and 7, to capture the total after it is calculated for each month.

Changes needed include:

1. For counter1 ← 1 to 12
2. total ← 0
3. For counter2 ← 1 to 2
4. total ← total + arrVisitors[counter1, counter2] This updates the algorithm to find the sum of visitors instead of rows.

To swap the values for 'Fun park' and 'Animal park' for May, use the following pseudocode:

temp ← arrVisitors[5, 1]
arrVisitors[5, 1] ← arrVisitors[5, 2]
arrVisitors[5, 2] ← temp

This correctly swaps the visitors' numbers for May.

OOP stands for Object-Oriented Programming. It is a programming paradigm based on the concept of 'objects', which can contain data and methods together.

The purpose of a constructor method in a class is to initialize new objects and set initial values for their attributes when the object is created. It ensures that an object is in a valid state before use.

It is not necessary to have numberOfDays as an attribute because it can be calculated from other attributes like startDate and endDate. This avoids redundancy and keeps the class design simplified.

Declaring the method calcDays() as a private method means it can only be accessed within the class itself. This encapsulation protects its implementation from external modification and ensures the method's integrity.

The setStartDate() method is essential because it allows for changing the starting date of a booking after its creation. This promotes flexibility in the object's use and helps meet changing user needs.

The toString() method is used to provide a string representation of the object, combining all attributes into a readable format. This makes it easier to display object details and debug during development.