a) i. Entity: In event-driven programming, an entity is an object or component that can trigger or respond to events. For example, a button in a graphical user interface can be an entity. When a user clicks the button, it triggers an event. ii. File: A file in event-driven programming is a resource used to store data permanently. For example, a text file can be used to store user input or program output. Events can be triggered when a file is opened, closed, read, or written. iii. Record: A record in event-driven programming is a collection of related data treated as a single unit. For example, in a database of employees, each employee could be a record that includes data fields like name, ID, and job title. An event could be triggered when a record is created, updated, read, or deleted. iv. Table: A table in event-driven programming is a collection of records. For example, a database might have a table of employees. Each row in the table is a record, and each column is a data field. Events can be triggered when a table is created, updated, read, or deleted. b) i. Designing a graphical user interface for this program would involve creating text boxes for employee name, hours worked, and pay rate, as well as a button to calculate gross pay and a display area for the result. ii. Here is a simple pseudocode example for calculating gross pay: ``` function calculateGrossPay(name, hours, rate) { if (name is not empty and hours 0 and hours 0) { if (hours 40) { return (40 * rate) + ((hours - 40) * rate * 1.5); } else { return hours * rate; } } else { display "Invalid input. Please check the values and try again."; } } ``` This function first checks if the inputs are valid. If they are, it calculates the gross pay based on the given rules. If the inputs are not valid, it displays an error message.

Question

a) 
i. Entity: In event-driven programming, an entity is an object or component that can trigger or respond to events. For example, a button in a graphical user interface can be an entity. When a user clicks the button, it triggers an event.

ii. File: A file in event-driven programming is a resource used to store data permanently. For example, a text file can be used to store user input or program output. Events can be triggered when a file is opened, closed, read, or written.

iii. Record: A record in event-driven programming is a collection of related data treated as a single unit. For example, in a database of employees, each employee could be a record that includes data fields like name, ID, and job title. An event could be triggered when a record is created, updated, read, or deleted.

iv. Table: A table in event-driven programming is a collection of records. For example, a database might have a table of employees. Each row in the table is a record, and each column is a data field. Events can be triggered when a table is created, updated, read, or deleted.

b) 
i. Designing a graphical user interface for this program would involve creating text boxes for employee name, hours worked, and pay rate, as well as a button to calculate gross pay and a display area for the result.

ii. Here is a simple pseudocode example for calculating gross pay:

```
function calculateGrossPay(name, hours, rate) {
  if (name is not empty and hours > 0 and hours <= 60 and rate > 0) {
    if (hours > 40) {
      return (40 * rate) + ((hours - 40) * rate * 1.5);
    } else {
      return hours * rate;
    }
  } else {
    display "Invalid input. Please check the values and try again.";
  }
}
```

This function first checks if the inputs are valid. If they are, it calculates the gross pay based on the given rules. If the inputs are not valid, it displays an error message.

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