Create a customer database and apply queries, Database Management System

Assignment Help:

For the question given below, you are required to submit design and implementation documentation as described over the page. Design, implement (in Java), test and document a set of classes for use in a program to manage a (prototype) online dating service. The service manages a list of customers.

Customers have login (names) and passwords.

A customer is either an advertiser or a responder.

All customers also have some personal details including gender, age and income.

An advertiser has a text advert, a description of partner sought and a list of reply messages.

A description of partner sought has a gender, range of ages and range of incomes.

A reply message has an owner (which is a responder) and some text.

When new customers are created, ie when someone has paid and is accepted, then they choose a new login and they are given their own default password. (We don't encrypt passwords in this prototype.)

When a new advertiser is created (when they log in) they enter the required details and they begin with no replies recorded for them.

When a new responder is created they enter their details. When a responder logs in for the first time or subsequently, the program finds all the matching descriptions sought by advertisers. The responder is then able to choose to send reply messages to any of those matching advertisers.

When an advertiser logs in later they get presented with their list of reply messages, old or new, which they can delete or keep to re-read. We assume that reply messages' text are supposed to contain other ways for advertisers to contact responders (eg, phone, email) so there is no need for this service to pass messages that way.

There should be a class to manage the list of customers. The final product will use a database to store customer data but the prototype for this assignment just needs to manage a datastructure.

It does NOT even have to store information in an external file.

Design and implement enough functionality in the classes to allow the operation of the following test program (which you also design, implement, test, document):

The client program should do the following (and explain on the screen as it does each step)

a) create a list of 6-7 different customers of both types with made-up details built in to the client program (Alternatively, get input from the user using the java.util.Scanner class),

b) get some matches for a responder, choose one match and send the match a message, then log in that advertiser to get the message,

c) add a new customer to the dating service,

d) delete an existing customer from the dating service,

e) display the details of all advertisers registered with the service,

f) display the details of all responders registered with the service,


Related Discussions:- Create a customer database and apply queries

What are the various states of transaction process, What are the various st...

What are the various states through which a transaction passes through in its lifetime?  Briefly discuss all the events that causes transition from one state to another.   Ans:

Explain composite attribute in sql, Explain Composite attribute in SQL ? ...

Explain Composite attribute in SQL ? Composite attribute: A composite attribute has many components, each of that is atomic or composite.

Describe data manipulation language, Describe Data Manipulation language ? ...

Describe Data Manipulation language ? Data Manipulation Language (DML) - A data manipulation language is a language which enables users to access or manipulate data as organize

Illustration of implementation of inheritance, Illustration of implementati...

Illustration of implementation of inheritance Let us take the illustration of implementation of inheritance. Suppose that we are about to implement the Stack class and by now w

Explain data dictonary on oracle, Explain data dictonary on oracle ? Da...

Explain data dictonary on oracle ? Data Dictionary - Data dictionaries are the system tables in which contain descriptions of the database objects and how they are structured.

Explain what is relation, Explain What is Relation? A database relatio...

Explain What is Relation? A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.

Explain the term- event, Event Occurrence of a process is called event...

Event Occurrence of a process is called event. In other words, the object can receive many input instructions. The changes which occur due to these instructions are known as e

Explain th process to avoid re-computation, Saving Derived Attributes to Av...

Saving Derived Attributes to Avoid Re-computation Data that is derived from other data should be stored in the computed form to avoid re-computation. For this, we could define

Join relation of two tuples, Consider the join of a relation R with relatio...

Consider the join of a relation R with relation S. If R has m tuples and S has n tuples, then the maximum size of join is: If R has m tuples and S has n tuples then maximum siz

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd