Jason’s bank account looks good but at a glance, he can’t easily see which transactions are related to his food truck business or his catering business.

He finds that at the end of the week, he’s using excel to record details from his bank account and credit card to figure it out. Jason would like to record a description of the transaction indicating whether or not the transaction was income or expense and more details of what the transaction was for.

Jason usually pays for supplies using his credit card. Jason’s clients usually pay in cash or by debit card.

Once Jason’s business grows to $30,000 in sales, Jason will be required to collect and pay HST. For this reason, Jason would like to know how much he’s paid and collected in HST.

He’d like a more robust system than Excel to manage these details.

Your task is to read the User Story below and create a class diagram and sequence diagrams to support the scenario.

User Story

As the owner of this business, I would like to record my financial transactions so that I can quickly see how much money I’ve made and what I owe the government in HST. For my purposes, my expenses were subtracted from my income.

Acceptance Criteria:

1. 1. Must be able to query transactions by date and provide a total profit and total HST
2. 2. Must be able to query transactions by date and by the source of the income.
3. 3. Differentiate between expenses and income – provide a running total of income – expenses
4. 4. Calculate the HST owed to the government by subtracting HST paid on expenses from HST collected on the income.

Use Case Descriptions

Use Case Name	Create an income transaction
Triggering Event	Money coming into the business.
Brief Description	Allows the Owner to record an income transaction.
Actors	Owner
Related Use Cases
Preconditions	The owner has opened the Main Menu.
Post Conditions	Income transaction is saved and added to financial totals.
Flow of activities	Actor		System
Requests to add a new income transaction	Displays a calendar Prompts for description, transaction amount, and HST amount Displays a list of income sources and prompts for selection
Selects the transaction Date Selects the income source Enters the transaction description Enters the transaction amount	Verifies that date is selected Verifies that description and amount have been entered Verifies that the income source was selected. Calculates HST Displays financial transaction Prompts to save
Request to save	Saves the transaction and returns to the main menu
Exception Conditions	The owner chooses to cancel adding the transaction

Use Case Name	Create an expense transaction
Triggering Event	Money leaving the business.
Brief Description	Allows the Owner to record an expense transaction.
Actors	Owner
Related Use Cases
Preconditions	The owner has opened the Main Menu.
Post Conditions	Expense transaction is saved and added to financial totals.
Flow of activities	Actor		System
Requests to add a new expense transaction	Displays a calendar Prompts for description, transaction amount and HST amount
Selects the transaction Date Enters the transaction description Enters the transaction amount	Verifies that date is selected Verifies that description and amount have been entered Calculates HST Displays financial transaction Prompts to save
Request to save	Saves the transaction and returns to the main menu
Exception Conditions	The owner chooses to cancel adding the transaction

Use Case Name	Query Financial Transaction
Triggering Event	Owner requires a list of transactions for a date period including Total Income, Total Expenses, Total Profit, Total HST collected, Total HST Paid, HST Owed
Brief Description	Allows the Owner to retrieve financial totals for a specified date range
Actors	Owner
Related Use Cases
Preconditions	The owner has opened the Main Menu.
Post Conditions	Financial transactions are retrieved, totaled and displayed
Flow of activities	Actor		System
1.	Requests to query financial transactions	Displays a calendar
2.	Selects date range	Verifies that dates are selected Retrieves transactions in the specified date range Calculates and displays total income, total expenses, Profit, total HST Owed. Prompts to exit
3.	Request to exit	returns to the main menu
Exception Conditions

Your tasks:

1. 1. Create a class diagram to support the above case study and Systems Use Case Specifications
2. 2. Create an object-level sequence diagram, detailing the Create Income Transaction systems use case specification
3. 3. Create an object-level sequence diagram, detailing the Create Expense Transaction systems use case specification
4. 4. Create an object-level sequence diagram, detailing the Query Financial Transaction system use case specification.