You are part of a team that will design a first generation mobile banking applic

Question

You are part of a team that will design a first generation mobile banking application. The Banking e-Teller (BeT) system allows bank customers to perform ATM transactions from their cell phones. BeT will allow customers to check balances, make remote capture deposits, and perform balance transfers to their checking or savings account. If approved by the technical management team, your design will be handed off to the development team for implementation.

Part A:

The design proposal will include a data dictionary. A data dictionary will help the team keep track of the variables used by the system. The first step is to determine the list of data items your system might need, assign an appropriate variable name to each, and identify the data type.

Using the rules of variable naming and the rules of data types complete the following table for at least 10 data items that your system will need:


Data Item Variable Name Data Type

Explanation / Answer

As an application developer, you will decide what types of information are necessary for your application and how these things would be used. When creating an application, you will provide these pieces of information to the computer, the computer then puts them together. When your program opens, part of your application gets “loaded” into the RAM. When the user is using your application, the information that your application requests also goes into the RAM while your application is processing such requests. Because your program will be made of many of these things, the computer needs to know what these things would be, and how much space each one of them would need. Because such a thing can change (vary) throughout your program, it is called a variable. Before using such a variable, you must first let the compiler know. Letting the compiler know about a variable is referred to “Declaring” the variable. The compiler will need two pieces of information concerning each variable: the amount of space the variable will need, and a name to recognize that variable. Therefore, the formula of declaring a variable is: SpaceOccupied VariableName; C++’ Names When using the various necessary variables in your programs, you will need to identify each one of them. A variable is primarily recognized by its name. C++ provides rules for naming items in your program. The name of a variable: Starts with an underscore “_” or a letter, lowercase or uppercase, such as a letter from a to z or from A to Z. Examples are Name, gender, _Students, pRice Can include letters, underscore, or digits. Examples are: keyboard, Master, Junction, Player1, total_grade, _Score_Side1 Cannot include special characters such as !, %, ], or $ Cannot include an empty space Cannot be any of the reserved words Should not be longer than 32 characters (although allowed) A name can consist of one word such as country. A name could also be a combination of more than one word, such as firstname or dateofbirth. The C++ compiler has a list of words reserved for its own use and you must not use any of these words to name your own objects or functions. The reserved words are: C++ Reserved Words asm auto bad_cast bad_typeid bool break case catch char class const const_cast continue default delete do double dynamic_cast else enum except explicit extern false finally float for friend goto if inline int long mutable namespace new operator private protected public register reinterpret_cast return short signed sizeof static static_cast unsigned struct switch template this throw true try type_info typedef typeid typename union unsigned using virtual void volatile wchar_t while Most compilers also have their own list of reserved words. Because this depends on the compiler, we cannot review all of them. Avoid starting the name of a variable with two underscores such as __finally or __stdcall. C++ is case-sensitive; this means that CASE, Case, case, and CaSe are four completely different words. To make your programming experience easier and personal, you can add your own rules to those above. Some (most) companies also adopt a naming convention throughout their documentation.

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