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The Real Estate Multiple Listing Service System

The Real Estate Multiple Listing Service system supplies information that local real estateagents use to help them sell houses to their customers.During the month, agents list houses for sale (listings) by contracting ith homeo ners.The agent or!s for a real estate office, hich sen"s information on the listing to the multiplelisting service.Therefore, any agent in the community can get information on the listing.

#nformation on a listing inclu"es the a""ress, year built, s$uare feet, number of be"rooms,number of bathrooms, o ner name, o ner phone number, as!ing price, an" status co"e.

%t any time "uring the month, an agent might "irectly re$uest information on listings thatmatch customer re$uirements, so the agent contacts the multiple listing service ith there$uest.#nformation on the house, on the agent ho liste" the house, an" on the real estate office theagent or!s for is provi"e".&or e'ample, an agent might ant to call the listing agent to as! a""itional $uestions or callthe homeo ner "irectly to ma!e an appointment to sho the house.T ice each month (on the th an" *+ th), the multiple listing service pro"uces a listing boo!that contains information on all listings.These boo!s are sent to all of the real estate agents.Many real estate agents ant the boo!s ( hich are easier to flip through), so they areprovi"e" even though the information is often out of "ate.Sometimes agents an" o ners "eci"e to change information about a listing, such as re"ucingthe price, correcting previous information on the house, or in"icating that the house is sol".The real estate office sen"s in these change re$uests to the multiple listing service hen theagent as!s the office to "o so.

Still to do: -lass "iagram se case "iagram Se$uence "iagram for /%"" a listing0 an" /1ro"uce a listing boo!0. Statechart "iagram for /1ropertyListing0 an" /RealEstate2ffice0.

Context diagram

Real Estate Multiple ListingService system

Real estateoffice

3omeo ner

Listing information

%gentListing information

Listing boo!

-hange re$uest

Re$uest for listing information

4otes5The homeo ner "oesn0t "irectly interact ith the system. #t all goes through the agent 6 office.-ommunication bet een the homeo ner an" other e'ternal agents must not be sho n.

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System diagram

Real estateoffice

%gent

1rocesslisting

3ouses

2 nersListing information

3ouse "etails

2 ner "etails

1rocessre$uest

Re$uest for listing information

Real estateoffices %gent 7 office "etails

3ouse info

%gent 7 office info

Listing information

Time 1ro"ucelisting boo!

Every 8 ee!s

Listing boo!

3ouse info

%gent 7 office info

-hangelisting info

-hange re$uest .p"ate" house "etails