Analyzing DFD/ERD
$30-5000 USD
Оплачується при отриманні
To analyse a DFD and a ERD according to a given scenario.
To feedback and suggest improvements to the DFD/ERD/Context diagram accordingly.
## Deliverables
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The analyst has performed an initial interview with Zake, a manager for Great-Life Real Estate. He has indicated that the housing market in the area is expanding rapidly. Housing sales are expected to increase by 10% in the next three years and five new agents are to be hired. The current system will not handle this increased load. Also, the current system only keeps information about homes and land listed for sale. It does not keep information about prospective buyers or match buyers to sellers.
Another problem is that the current system does not have the capability to tie into other state and national real estate listing services. After completing a preliminary investigation (survey), the analyst discovers that each real estate agent had developed their own system, some on computers, but each was different. Several problems were identified:
1. An expected increase in the sales listing that cannot be handled by the current system
2. Lack of any information about potential buyers resulting in lost sales
3. Matching of sellers to buyers is being done manually and depends on the particular agent
4. Missed closing has increase to 10% from only 3% three years ago due to lack of timely information
5. Lack of ability to interface with other state and national listing services
The end-users include sales agents and management of Great-Life Real Estate. Also, customers, clerical staff, various governmental agencies, and other real estate organizations would be affected. The new information systems would need to support a wide variety of normal business transactions such as home and property listings, potential buyers and their requirements, requests for showings, mortgage and finance details, inspections surveys, closings, etc. The system would also need to provide a full range of management reports and decision support information. The new system would have to be in operation within one year, interface with state and national listing networks, and be cost-justified.
Additional, more specific goals and objectives will be defined later. Four primary transactions have been identified as necessary process inputs. They are: a sales request from a seller (offer to sell); a buyer request (need and interest profile); a request for a showing of a listing by a potential buyer; and an offer to buy a listing. These transactions (and any other you may add) necessitate the maintenance of at least nine data stores: seller; house; property; listing; room; buyer; offer; closing; and showing.
Six management reports and two query responses have also been identified as required: detail reports on all listings and all showings; summary reports on listings by area and accepted offers; exceptions reports on unsold listings and rejected offers; and queries about an offer status and about a closing. Initially, a seller who owns property and possibly a house which contains rooms contacts the agency about selling the property and possibly (house). The agency creates a listing from the information about the property and house. Potential buyers may request a showing of a particular listing. A potential buyer may also make an offer for a listing to a seller. If the offer is accepted, a closing for the offer is scheduled.
## Platform
windows
ID Проекту: #3634932
Про проект
1 фрілансер у середньому готовий виконати цю роботу за $85
