Applications which make use of blockchain technology are knawn as DApps. As developer for Elon's company, you are tasked with creating an easy to use Expense Tracker which saves data to the chain. Your friend wants to keep it as simple as possible to ensure that it's easy to pick up.Required features:User can input an expenseAdd new usersOwner can Block/Unblock usersBlocked users cannot post anythingIf the cost is more than 100 uint then that specific expense is marked as "Too expensive"; if less than 10 uint then it's marked as "Cheap".Mark when the latest expense was made (refer below)The name of the app can be updated by ownerRead data:App nameShow a user's most expensive expenseShow a user's cheapest expenseTotal sum of a specific user's latest expenseCount of how many expenses does a user haveGet data on the most recent expenseShow user infoDATA:Expenses: id, category, amount, is it cheap, expensive, or not; date it was madeUser: id, address, totalExpense, isBanned

Answered: Applications which make use of…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Applications which make use of blockchain technology are knawn as DApps. As developer for Elon's company, you are tasked with creating an easy to use Expense Tracker which saves data to the chain. Your friend wants to keep it as simple as possible to ensure that it's easy to pick up.

Required features:

User can input an expense
Add new users
Owner can Block/Unblock users
Blocked users cannot post anything
If the cost is more than 100 uint then that specific expense is marked as "Too expensive"; if less than 10 uint then it's marked as "Cheap".
Mark when the latest expense was made (refer below)
The name of the app can be updated by owner

Read data:

App name
Show a user's most expensive expense
Show a user's cheapest expense
Total sum of a specific user's latest expense
Count of how many expenses does a user have
Get data on the most recent expense
Show user info

DATA:

Expenses: id, category, amount, is it cheap, expensive, or not; date it was made
User: id, address, totalExpense, isBanned

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