pos and inception

7/27/2019 POS and Inception

1/14

The NextGen POS System


2/14

NextGen POS System

P-O-S is a Point-of-Sales System.

What is the target of the Sales in General?

More People Checks into the mall=MORE MONEY


3/14

-Let us take an Example of Cashier Check out Sales

Let us assume In an Instance.

100 people checked into a mall and only 20 people got out

quickly but other 80 stuck at cashier counter

because.

Cashierwasnt able to send them out due to machine

malfunct ion. .

Would the Prefer the Same Mall again???

They WouldntSo...in point of sales we design a

system..


4/14

Point-of-sales (POS) terminals have played a very critical

role in the evolution of the retail sales industry, extendingits application from simple transaction machines at the

checkout counter in a provision store.

Automated transactions have decreased customer waitingtime at the cash counter and increased customer value for

the retailer.

POS terminals have transcended several industries like

hospitality, inventory management and health care.


5/14

A Simple POS Machine. *Advanced POS machine


6/14

Architectural layers of a Common POS

Machine

A typical object-oriented information system is designed in

terms of several architectural layers or subsystems The

following is not a complete list, but provides an example:

User Interface graphical interface; windows.

Application Logic and Domain Objects software objects

representing domain concepts (for example, a software class

named Sale) that fulfill application requirements.

Technical Services general purpose objects and

subsystems that provide supporting technical services, such

as interfacing with a database or error logging. These services

are usually application-independent and reusable across

several systems.


7/14

Next GEN POS State Machine Diagram


8/14

INCEPTION


9/14

SoInception is.. Inception is the initial short step to establish a common vision

and basic scope for the Project.

It will include analysis of perhaps 10% of the use cases,

analysis of the critical non-Functional requirement, creation of a

business case, and preparation of the development

Environment so that programming can start in the elaboration

phase.

Inception in one Sentence: Envision the product scope, vision,

and business case.


10/14

login

withdraw

deposit

customer

layout

balance checking

generate report

maintain atm

admin

maintain db

A use case diagram is an excellent picture

of the system context; it makes a good

context diagram that is, showing the

boundary of a system, what lies outside of

it, and how it gets used. It serves as a

communication tool that summarizes thebehavior of a system and its actors


11/14

Elaboration..

Elaboration follows Inception Now what is Elaboration?

Elaboration is the initial series of iterations during which the

team does serious investigation, implements (programs andtests) the core architecture, clarifies most requirements, and

tackles the high-risk issues.

In the UP, "risk" includes business value. Therefore, earlywork may include implementing scenarios that are deemed

important, but are not especially technically risky.


12/14

Tasks Performed in Elaboration

the core, risky software architecture is programmed and

tested

the majority of requirements are discovered and stabilized

the major risks are mitigated or retired


13/14

Key Ideas and Best Practices in Elaboration

do short time boxed risk-driven iterations

start programming early

adaptively design, implement, and test the core and riskyparts of the architecture

test early, often, realistically

adapt based on feedback from tests, users, developers

write most of the use cases and other requirements in detail,through a series of workshops, once per elaboration iteration


14/14

pos and inception

Documents