Hướng dẫn học Microsoft SQL Server 2008 part 167 pptx

CHA launches tours from multiple sites, or base camps, throughout the world.. Each base camp may be responsible for multiple tours.. Database design The database design uses typical one-

Trang 1

B Using the Sample Databases

the easternmost point of North Carolina’s Outer Banks, known for incredible empty beaches and the

graveyard of the Atlantic

Cape Hatteras Adventures leads wild and sometimes exotic adventures for the rich and famous From

excursions down the gnarly Gauley River in West Virginia to diving for sunken treasure off the Outer

Banks to chopping through the Amazon jungle, Cape Hatteras Adventures gets its guests there and

brings them back, often alive and well

The staff and management of CHA are outdoors folks, and their inclination to avoid the indoors shows

in the effort that’s been put into IT The customer/prospect list is maintained in Access 2000 in a

single-table database It’s used primarily for mailings The real workhorse is an Excel spreadsheet that

tracks events, tours, and tour guides in a single flat-file format In the same page, a second list tracks

customers for each event Although the spreadsheet is not a proper normalized database, it does contain

the necessary information to run the business

QuickBooks handles all financial and billing activities, and both the company president and the

bookkeeper are very satisfied with that setup They foresee no need to improve the financial or billing

software

Application requirements

CHA has grown to the point that it realizes the need for a better scheduling application; however, it

desires to ‘‘keep the tough work in the rapids and not in the computer.’’ CHA has contracted for the

development and maintenance of the database

All scheduling and booking of tours takes place at the main office in Cape Hatteras, North Carolina

CHA launches tours from multiple sites, or base camps, throughout the world The base camps generally

have no computer access and sometimes no electricity Guides are dispatched to the base camp with

a printed guest list If it’s determined in the future that a base camp may need to be staffed and have

access to the schedule online, a web page will be developed at that time

Each base camp may be responsible for multiple tours A tour is a prearranged, repeatable experience

Each time the tour is offered, it’s referred to as an event An event will have one lead guide, who is

responsible for the safety and enjoyment of the guests Other guides may also come along as needed

As CHA brings on more guides with broader skills, the database must track the guides and which tours

each one is qualified to lead

Database design

The database design uses typical one-to-many relationships between customer type and customer, and

from guide to base camp to tour to event Many-to-many relationships exist between customer and

event, guide and tour, and guide and event

Concerning the development style, there is currently no need for multiple database sites, so identity

columns will be used for simplicity of design The primary means of access to the data is through views

and directSELECTstatements

Data conversion

TheCHA2_Create.sqlscript creates an empty database The data resides in the Access and Excel

spreadsheets Both theCHA_ConversionDTS package and theCHA_Convert.sqlscript can extract

the data from Access and Excel and load it into SQL Server

Trang 2

Using the Sample Databases B

CHA2.adp front end

Because the Cape Hatteras Adventures staff is comfortable with Access forms and does not require the

robustness of a full Visual Basic or NET application, a simple front end has been developed using

Access.adp project technology

OBX Kites

OBX Kites is a high-quality kite retailer serving kite enthusiasts and vacationers around the Outer Banks,

where the winds are so steady the Wright brothers chose the area (Kill Devil Hills) for their historic

glider flights and their first powered flights OBX Kites operates a main store/warehouse and four remote

retail locations and is planning to launch an e-commerce website

OBX Kites needs a solid and useful order/inventory/purchase order system with a middle-of-the-road

set of features For simplicity, all contacts are merged into a single table, and the contact type is

signi-fied by flags A contact can be a customer, employee, or vendor Customers have a lookup for customer

type, which is referenced in determining the discount Full details are maintained on customers,

includ-ing both a summer location and the home location The product/inventory system must handle multiple

suppliers per product, price history, multiple inventory items per product, multiple locations, and

inven-tory transactions to track inveninven-tory movement

Database design

The database design uses standard one-to-many relationships throughout

The database construction must support replication and Unicode for international customers For

per-formance and flexibility, the database implements two filegroups — one for heavy transactions and the

Định dạng
Số trang	4
Dung lượng	816,85 KB