yaar muje is assignment ki bilkul b smj nai arai k kiya snd kna hai
plzzzzzzzzzzz anybody send the correct solution???????????????????????????????????????
solution by king rana
analyze all the processes in the system like this:
Owner wants to computerize his business by developing trade magt system
Owner hires Database Administrator put up real world scenario and requirements as given below:
Trade Management System permits user to proficiently initiate and evaluate the process of requirement for the BEST Mart.
Client comes to BEST Mart,
Selects the cart
Place the things in cart
Goes towards salesman.
Salesman examines the code of each selected item.
On entry system will display invoice with some details like: name of the product, its related magnitude/quantity and total sales line items along with total bill.
After placing order, client will ahead to accountant counter to pay bill.
Assignment Solution Step by Step:
In part one; we have just extracted the main object/classes of given scenario along with their relevant/necessary attributes and operations.
Part two show the Object Model of Music Library System. In which all fourteen classes and their relationship with each other is shown. All these classes and their relationship are exactly mapped with the details given in the assignment write-up.
Mistake 1: Relationship among different classes is incorrect.
Explanation: While showing the relationship between different classes, most of the students make mistake. Especially where composition exists, most of the students show aggregation.
Mistake 2: Band and Solo singer classes missed.
Explanation: More than 90% students skip both these classes in object model even though they are very clearly mentioned in assignment write up and cant be neglected as they are the core details of given scenario.
Mistake 3: Incomplete solution provided by many students.
Explanation: Most of the students did not read the assignment write up thoroughly and therefore they skip the necessary details.
Mistake 4: Knowledge of association, inheritance and its use with diagram representation
Explanation: UML based proper symbolic representation wasn’t provided. Some used arrow symbols, some given straight lines and some given only empty spaces to show relationship.
Mistake 5: Proper class representation
Explanation: Proper representation of attributes, methods and class name was not provided according to UML rules for class diagram by many students.