英文測試說明文檔

1、i. introductiona. system reference we assumed both maria's computer co. and potential customers. 1. for a customer who wants to buy computer. . screen set to 640 * 480 and 256 color (if not, causes text to be obscured by side margin by our model.) . 28.8k or 56k modems (this can spare graphics a

2、nd make color reduction.) . netscape 2.0 over or ms explore 3.0 over (this can supports java script.) 2. second, for maria computer co . vb basic or ms access . ms window 95 or nt . personal web server b. overall description . managing the web server . controlling the database interactively . real t

3、ime executionc. software project constraintsii. information descriptiona. information content representation see app.1 .customer:customer_id, customer_name, etc . .product:product_id, product_name, brand, etc. .payment:order_number, payment pattern, shipping & handling, etc. b. information flow

4、representation1. data flow see app.2event start => customer => selection_product => selection_pay,delivery =>=> final_decision =>endiii. functional description a. functional partitioning this on-line shopping system is partitioned into three functions: processing user id, selecting

5、 computer-related products, and choosing payment & shipping patterns. b. functional description see app.3 1. restrictions / limitation since time is very limited, the first product does not included a report, which can be handed in the supervisor, so that this on-line store can be operated more

6、systematically. those customers can not receive our shopping news monthly. now the on-line order is limited in the north america since the mailing fees would be very high if we sell products to other countries. we will improve it in the future.this on-line store can only be useful for usd and canadi

7、an dollars.since the order of mainframe is very limited, now we do not keep kinds of products in our product inventory. 2. processing narrative in “processing user id” function, since this system is only available for some one who is in north america, this function can not process the address which

8、is out of usa and canada.in “selecting computer products” function, mainframe will not available and not every brand included. 3. design constraints the customer can only cancel the order before “selecting payment & shipping pattern” function. once the customers input the credit card numbers or

9、other payments pattern, they can not drop the order. we will provide verification before they input the payments pattern so that they will know the order can not be dropped. but if the customer is not satisfied with the products, we have the full-refund policy.any customer who wants to order product

10、s, he or she must have user id. selected productinformation 4. supporting diagramscustomeron-line shopping systemproductsc. control description see app.4 1. control specification . when the products ordered by a customer is out-of-stock, display “ it is out-of-stock now” . when the customer inputs o

11、ther countrys address, display “ it is only available within north america”. . when the customer cancel the order or do not want to enter this web page further, go back. 2. design constraints customer will not be allowed to drop the order after he or she had selected payment and mailing patterns.iv.

12、 behavioral descriptionthere are 3 levels of state diagram.a. state diagram level 1 see app.5 we have 4 states such as reading user input, select computer component, check user id and choosing payment pattern. each state has an external event that causes the system to change state. from reading user

13、 input state, there are two options that customer can select. first, when customer selects shopping button on screen, the shopping page (select computer components page) will be activated. from select computer components stage, if customer selects item that he wants to buy or exit the program, the s

14、tage “choosing payment pattern” will be activated. after he selects payment pattern, the software will invoke input screen again for waiting customer input. the second option is to create customer profile in database. after creating customer profile, customer can select computer that he wants to buy

15、 or exit program.b. state diagram level 2 see app.6 1. for selecting computer productswe have 3 states: reading user input, selecting computer products & brands and calculating expense. each state has an external event that causes the system to change state. from reading user input, when custome

16、r wants to buy a product, the software will invoke the shopping page. after the customer selects product & brand that he wants to buy, the software will invoke calculation expense of the product. 2. for processing customer id & display invoicewe have 4 states: reading user input, check custo

17、mer id, creating customer id and displaying customer information & item selected. each state has an external event that causes the system to change state. from reading user input, when customer wants to buy something, he has to put customer id. if he is not a member, the software will invoke cre

18、ating customer id page. if he is a member and he wants to display product that he chose in the past, the software will invoke displaying customer information & item selected page. 3. for selecting payment & shipping patternwe have 3 states: reading user input, select payment & shipping p

19、attern and calculating total expense. each state has an external event that causes the system to change state. form reading user input, when customer selected products and brands already, he has to select payment and mail pattern to pay his products. after that, the software will invoke total amount

20、 page that customer can understand how much he has to pay for the product. c. state diagram level 3 see app.7 1. for display customer idwe have 4 states such as reading user input, display information, update information, and customer checks order. each state has an external event that causes the sy

21、stem to change state. from reading user input, when customer selects the product that he wants, before he submits the process, the confirmation page will show him to confirm the product that he selected. in this level, he can also select the button display ordered product that will show him about th

22、e list of product that he bought, total price and type of shipping. v. validation and criteriaone of the requirements in this software is interactive web site: which means "zeromaintenace" in web site and company database both. the customer id is produced in database automatically and obta

23、ined when the customer wants to get it. and when the customer summit, the data is updated automatically. testing for marias on-line computer store case testing: white box tests are done by jin-tak and narumonpdl:1 do until finish shopping2 input product & brand3 if the quantity of product is nul

24、l4 then display “out-of store” go back 25 else update cart store6 calculate sum of prices7 if products are not correct8 then go back 29 else input payment & mail pattern 110 if new customer11 then input customer information12 if the address is not in north america 213 then display “it is limited

25、 in north america” , go to 1814 else build customer-id15 else input customer-id 316 display customer information17 update order store 518 if continue shopping, go back 2 419 else end do 6flow graph: 7 8 910111516121314171819v(g)=6e-n+2=6p+1=6basis set:path 1: 1 2 3 5 6 7 9 10 15 16 17 18 19path 2: 1

26、 2 3 4 2 3 5 6 7 9 10 15 16 17 18 19path 3: 1 2 3 5 6 7 8 2 3 5 6 7 9 10 15 16 17 18 19path 4: 1 2 3 5 6 7 9 10 11 12 14 17 18 19path 5: 1 2 3 5 6 7 9 10 11 12 13 19black box testing:for function “selecting computer product”does it calculate the sum of prices correctly?does the cart store show the c

27、orrect information?for function “selecting payment & shipping pattern”if the products are not what customers want, can they go back shopping?for function “purchase items”can we identify the customer-id correctly?can we build customer-id correctly?does the “ display customer information and items

28、” show the information correctly? vi. appendix1. a er diagram er diagram companycustomerpaymanagedeliverybuyproducta. dat object type hierarchiesdata object type hierarchieshardwareexplorerosapplicationdesktop14'17'monitorcomposedibmhpcompaqlaptopinkjetlaserprintersoftwarecomposedc. data dic

29、tionary 1. social security numbername : ssn#aliases : nonewhere used/ how used : search informationdescription : ssn# = access number access number = *any nine number string* 2. first namename : first_namealiases : nonewhere used/ how used : search, add, delete and update customer databasedescriptio

30、n : first_name = access name access name = *any name string*3. last namename : last_namealiases : nonewhere used/ how used : search, add, delete and update customer databasedescription : last_name = access name access name = *any name string*4. middle namename : mid_namealiases : nonewhere used/ how

31、 used : search, add, delete and update customer databasedescription : mid_name = access name access name = *any name string*5. addressname : addressaliases : nonewhere used/ how used : search, add, delete and update customer databasedescription : address = address number + street name address number

32、 = *any number string* street name = *any street name string*6. cityname : cityaliases : nonewhere used/ how used : search, add, delete and update customer databasedescription : city = *any city name string* 7. zipcodename : zipcodealiases : nonewhere used/ how used : search, add, delete and update

33、customer databasedescription : zipcode = access zipcode name access zipcode name = *any five number string*8. phone numbername : phone#aliases : nonewhere used/ how used : search, add, delete and update customer databasedescription : phone# = long distance numberlong distance number = (1) + area code + local number local number = prefix number + access number prefix number = 795|799|874|