CS504 Final Term Highlighted Handouts Lectures 19-45 by Masters

item register

Tax Category (Descriptive things)

Session Is it important? It is important in order to evaluate a cashier’s performance.

Identify Structures

Identify Gen-Spec Structures

Kinds of stores: A store is a kind of sales outlet. Perhaps over time, Connie will expand to other kinds of sales outlets. Stores might be specialized into kinds of stores. For now on leave store as it is.

Kinds of sales:

• sales, returns
• only different is that the amount is positive or negative. Is there any other difference?

Prices:

• regular price, and promotional (sales) price

Payment:

• cash, check, and charge are kind of payments

Identify Whole-Part Structures A store as a whole is made up of cashiers, registers, and items. A register contains a cash drawer. A sale is constituted of sale line items. Price Payment

Charge Cheque

Object Hierarchy

Sale Stote

Register Item Cashier

Whole-Part Structures

Establishing Responsibilities

Who I Know - Rules of Thumb

an actor knows about its participants person knows about cashier a transaction knows about its participants a session knows about its register and cashier A transaction contains its transaction line items sale contains its sales line items A transaction knows its sub transactions session knows about its sales sale knows about its payments A place knows about its transactions store knows about its sessions A place knows about its descriptive objects store knows about its tax categories A container knows about its contents a store knows about its cashiers, items, and registers

Register Store

Sales Payment Session Cashier Person

Association Relationships

Define Attributes, Services, and Links - What I know, What I do, and Who I know?

Actors: person name, address, phone Services: eating, walking

Participants: cashier number, password, authorization level, current session Services: isAuthorized, assess Performance

Places: store

Services: get item for UPC, get cashier for number