I guess if no one has any changes you can just put our names on it and
print it out and bring it to class tomorrow
One thing: make sure that there is a (disjoint, complete) line between
the employee class and the 2 subclasses. I can't remember if we put it
there or not. If it isn't, just add it.
We were talking about putting more notes in but I don't think the
diagram will hold anymore stuff
Christian Arias wrote:
> Thanks Chris. That clears it up for me. Is there anything I can do before we
> the project is turned in tomorrow?
>
> Chris Arias
>
> -----Original Message-----
> From: ism6129proj-bounce@xxxxxxxxxxxxx
> [mailto:ism6129proj-bounce@xxxxxxxxxxxxx] On Behalf Of csmall
> Sent: Monday, November 13, 2006 1:02 PM
> To: ism6129proj@xxxxxxxxxxxxx
> Subject: [ism6129proj] Re: Meeting on sunday
>
>
>> Per the diagram, the manager updates the rental copy. What does that
>>
> update
>
>> correspond to?
>>
> There are 2 different movie classes. One is a movie database which
> records information (title, year, etc.) about the movies we rent. The
> manager uses this to answer queries There is another class made up of
> rental copies. These are the individual copies of movies that we rent
> out. The idea is that there would be data redundancy if we only had 1
> class for movies. For each copy of a movie we rented out we would have
> to store title, year, etc. even though they are all the same (ie 10
> copies of Mission Impossible would be the same with only a Movie ID
> changing.) Separating these enables us to reduce the redundancy, record
> how many times a rental copy is rented and also how popular a particular
> title is.
>
> When a manager updates a rental copy, he is adding a copy of a
> particular movie into the rental database. (ie, there are 10 copies of
> Mission Impossible and he wants to add an 11th)
> He doesn't need to update the movie database because it is already there.
>
>
>> What does the dashed line going from the employee super-class to the
>>
> rental
>
>> copy order represent?
>>
>
> An employee (manager or hourly) Scans in a movie (so there is a line
> between employee and movie) and that action updates the rental copy
> order for that movie. It records the return date and calculates late
> fees. We made the order an association class between the employee and
> the movie. The line should be coming from the line not from the employee
> class.
>
>
>
>> Is the rental copy
>> order the receipt given to a customer upon rental or a bill for late fees?
>> If it is a receipt given at initial check-out, would it be feasible to
>>
> have
>
>> a late fee operation seeing how no late fees would have accrued at that
>> point and time? I'm just unclear as to what we mean by rental copy order.
>>
>
> It is both. It records the transactions when a movie checked out and a
> physical receipt can be produced by the data that it records. Also,
> internally, it keeps track of the due dates and charges associated with
> that order. When a movie is returned, this order class is responsible
> for determining late charges and updating the costumer account
>
>
>
>
>> Also, I didn't see a class for payment system. Is that because we are just
>> going to say that we don't need to maintain any data related to the
>>
> payment
>
>> system and just include it as an operation in movie order form? I'm just
>> curious, but if that's the case, it sounds like a good idea to me.
>>
>
> We removed both the payment system and the billing system. We were
> thinking of the activities example that he gave in class. A student
> participates in activities and an university keeps track of the
> participation. However, since there is only 1 university and it never
> changes, there was no need for a university class. Same thing here.
> There is no need for a separate class which only performs functions and
> wouldn't have any attributes. We off-loaded those functions onto the
> rental order class and the new movie order class
>
>
>
>
>
>
> Christian Arias wrote:
>
>> Sorry my fourth question was cut-off before sending. Is the rental copy
>> order the receipt given to a customer upon rental or a bill for late fees?
>> If it is a receipt given at initial check-out, would it be feasible to
>>
> have
>
>> a late fee operation seeing how no late fees would have accrued at that
>> point and time? I'm just unclear as to what we mean by rental copy order.
>>
>> Thanks
>>
>> Chris Arias
>>
>> -----Original Message-----
>> From: Christian Arias [mailto:carias584@xxxxxxxxxxxxx]
>> Sent: Monday, November 13, 2006 9:19 AM
>> To: 'ism6129proj@xxxxxxxxxxxxx'
>> Subject: RE: [ism6129proj] Re: Meeting on sunday
>>
>> I looked over the class diagram and everything looks really well laid out.
>>
> I
>
>> just had a couple questions.
>>
>> Per the diagram, the manager updates the rental copy. What does that
>>
> update
>
>> correspond to?
>>
>> What does the dashed line going from the employee super-class to the
>>
> rental
>
>> copy order represent?
>>
>> Is the rental copy order the receipt given to customer upon renting the
>> video or a bill for late fees? If it is a recep
>>
>> Also, I didn't see a class for payment system. Is that because we are just
>> going to say that we don't need to maintain any data related to the
>>
> payment
>
>> system and just include it as an operation in movie order form? I'm just
>> curious, but if that's the case, it sounds like a good idea to me.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
