## Customer

id | firstName | lastName | dateOfBirth
--- | --- | --- | ---
1 | John | Doe | 1980-01-01
2 | Jane | Smith | 1976-02-23

## SavingsAccount

accountNumber | customerId | balance | interestRate
--- | --- | --- | ---
| (→ Customer.id) |  |
1 | 1 | 1000.0 | 1.0
2 | 2 | 2000.0 | 2.0

## RetirementSavingsPlan

planId | retirementType | rateOfReturn | savingsAmount
--- | --- | --- | ---
|  | (→ RateOfReturn.value) |
1 | Pension Plan | 0.05 | 5000.0
2 | Pension Plan | 0.07 | 6000.0
3 | Brokerage Account | 0.05 | 3000.0
4 | Brokerage Account | 0.07 | 4000.0

## RateOfReturn

value | description
--- | ---
0.05 | 5% Annual Return
0.07 | 7% Annual Return