Answer Happy

Community Board of Realtors® The Multiple Listing
Service system has a number of use cases, which you identified in
Chapter 3, and three key domain classes, which you identified in
Chapter 4: RealEstateOffice, Agent, and Listing. 1. For the use
case Add agent to real estate office, write a fully developed use
case description. Also develop an activity diagram and draw an SSD.
Review the case materials in previous chapters and recall that the
system will need to know which real estate office the agent works
for before prompting for agent information. 2. For the use case
Create new listing, write a fully developed use case description.
Also develop an activity diagram and draw an SSD. Recall that the
system needs to know which agent made the listing before the system
prompts for listing information. 3. Do a CRUD analysis based on the
use cases and classes you have identified. What does it
show?
Community Board of Realtors® One of the functions of the Board of Realtors introduced in Chapter 2 is to provide a Multiple Listing Service (MLS) system that supplies information that local real estate agents use to help them sell houses to their customers. Agents list houses for sale (listings) by contracting with homeowners. The agent works for a real estate office, which sends information on the listing to the MLS. Therefore, any agent in the community can get information on the listing. The MLS systems include lots of information on a listing. It is now common to include dozens of photos, video tours, Google map information, prior sales, and so forth. For now, let's keep it simple and assume a listing includes the address, year built, square feet, number of bedrooms, number of bathrooms, owner name, owner phone number, asking price, and status code. An agent will directly request information from the MLS system on listings that match customer requirements. Information is provided on the house, on the agent who listed the house, and on the real estate office for which the agent works. This information is needed because an agent might want to call the listing agent to ask additional questions or call the homeowner directly to make an appointment to show the house. Although it seems dated, once each week, the MLS produces a listing booklet that contains information on all listings. These booklets are sent to some real estate agents because many think they are easier to flip through and write on. Sometimes, agents and owners decide to change information about a listing, such as reducing the price, correcting previous information on the house, or indicating that the house is sold. The agent updates the information directly on the MLS system.