Lines create objects of each of the four concrete Employee derived classes. To solve all this the organization require very good software to take care of all these. An evaluation of the probability that the organization is sufficient motivation to support the development and implementation of the application with necessary user participation, resources, training etc. The conceptual data model is supported by documentation such as a data dictionary. The views and operations should be easy to use and intuitive. It is easy to use, efficient and flexible.

Microsoft Access is a software product used for desktop database applications. In OOPs it attempts to break a problem into its component parts. These include collection and calendar classes, as well as some abstract design codified by the interfaces comparator, iterator and observer. This means that we have been using databases all our life. User-interface mockups or systems can also be created to help understanding. Retrieved from Lenny Zeltser Blog:

Case Study: Payroll System Using Polymorphism

The software built to pxyroll individual pay slip and summary of the payroll. Although a subclass object also is a superclass object, the two objects are nevertheless different.

To better understand how Java is robust, consider two of the reasons for program failure, memory management mistakes and mishandled exception conditions i. If you wish to download it, please recommend it to your friends in any social system.

BasePlusCommissionEmployee ‘s print function lines outputs “base-salaried”followed by the output of base-class CommissionEmployee ‘s print function another example of code reusethen the base salary. Compatible with the system available in the organization.

The employees are of four types: It also takes very long time to make salary slip ready.


case study for payroll system in ooad

To include Swing components and methods in your project you must import the java. Implementation details are supposed to be mostly or totally depending on the particular method ignored at this phase.

Case study for payroll system in ooad – payroll system in ooad lab pdf

This is because a model that includes multiplicity constraints gives a better representation of the system. Assigning a superclass variable to a subclass variable without an explicit cast is a compilation error.

The include Preprocessor Directive F. The causes that the team could change were data crunching, master changes in SAP the enterprise resource planning program and repeated payrolls in data formats requested from the case office.

case study for payroll system in ooad

The class includes a constructor that takes the first name, last name and social security number as arguments lines 11—16 ; get methods that return the first name, last name and social security number lines 25—28, 37—40 and 49—52, respectively ; set methods that set the first name, last name and social security number lines 19—22, 31—34 and 43—46, respectively ; method toString lines 55—59which returns the string representation of Employee ; and abstract method earnings line 62which will be implemented by subclasses.

File Design Once the input data is captured in the system, these may to be preserved either for a short or long period. A multithreaded application can have several threads of execution running independently and simultaneously.

By Anupam Hayat Shawon. The programming has been done using the language Java. Breakpoints and the run, stop, continue and print Commands M. Virtual function calls made off base-class pointers: Also note that obtaining the earnings of each Employee polymorphically in line 86 produces the same results as obtaining these employees’ earnings via static binding in lines 44, 46, 48 and The watch Command M.


Case Study: Payroll System Using Polymorphism | Object-Oriented Programming: Polymorphism

Alpha testing is often employed for off-the-shelf software as a form of internal acceptance testing, before the software goes to beta testing. Sentence 9 A stopover has an arrival time and a departure time Stopover Objects: The conceptual data model is supported by documentation such as a data dictionary. JFrame is the most commonly used top-level container. Technical feasibility is frequently the most difficult area to ensure this stage.

Outputs of a data-processing system can be placed into two categories: All organization is required to produce a certain amount of reports and forms as required by law. Crystal Reports 9 on Oracle Database Professionals. Salary Management System Acknowledgment. Additional scenarios should be written for administrative parts of the system, such and authorising a new user, opening or closing a project list, adding or deleting an archive.

Note that BasePlusCommissionEmployee ‘s print initiates a chain of functions calls that spans all three levels of the Employee hierarchy. The countermeasure ideas took two months to test.

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