Bank System [?]

[sebasuraa]

Hi, first of all, sorry if you don't understand something, english is not my main language. I have to make a mini bank system (it's an assignment), but I don't really know how banks work. I'm thinking of making to web systems, one for the client and another one for the bank agent, but I don't know if there's a better way to do it. I would add a third kind of account, which is the Admin, to administrate the bank agent accounts and stuff, but I'm kind of lost on how banks actually work with this. I also need to withdraw (I don't know if this word is correct) money from an account, so I will need another app for the ATM (I can just think of the ATM as a "smart-atm", with touch screen and stuff, not necessarily like the ugly ones that exist now). Is it really necessary that I create 3 different systems? can you help me on the "design" of the problem? I translated the basic requirements: A bank system is needed. This system must allow deposits on a bank account. Deposits can be made in cash or by check. The system must keep a log of all the movements in the accounts. A "bank agent" can create client accounts, and he will have access to see their movements information, like amount, date, hour, and destination (transfers, deposits, etc). The application must allow: Deposits by check. - Validate the info. (ie: serial of the check) Deposits in cash. - Validate the info: client info, account number, etc. User account management - Profiles: Bank agent, client. Bank account management - User "Bank agent" can freeze bank accounts - User "Client" can see the movements of his account (by date ranges, or a particular day, etc) The system must have a service to withdraw money from the bank account Thanks.

[Jose Amilcar Casimiro]

Do you have any restriction on the technology to be used?

[sebasuraa]

Oh yes, sorry, I forgot. I have to use Java EE and Mysql server.

[Jose Amilcar Casimiro]

I would choose just one application with three different profiles. Would opt for a presentation layer, a layer with the domain model or business layer and a data layer. The presentation layer would then be a web application, the business layer would contain all the logic and finally the data layer that abstracts the business layer operations with the database. The business layer in my opinion should be modeled using the domain language. Do you already create your data model?

[jschell]

sebasuraa wrote:

but I don't really know how banks work

You are confusing things. You don't need to know how banks work. What you need to know is how to implement the assignment that you were given. This should be based on something that you have already done. Presumably you have already been introduced to designs or perhaps Agile. So that is where you start. Although if not you can still start by just coding one single feature.