We can define execution schedules for any repeated tasks that need to be performed throughout the lifecycle of an account. These can be used for anything but typical examples would be daily interest accrual, monthly interest payment, or an annual account fee.

Exercise

For this exercise, implement an execution schedule called ACCRUE_INTEREST that runs every day, calling a helper function _accrue_interest (that we will define in a later exercise).

Implementing an execution schedule requires the use of two hooks, execution_schedules to define the times at which the events will be executed, and scheduled_code to define the code that is run for each even