Posted: September 13th, 2017

You are to investigate an information system (IS) of your own choosing. For the IS:

You are to investigate an information system (IS) of your own choosing. For the IS:

1-Produce a diagram which shows the major components ofthe IS and how these components link togetherto form the IS. A general model of an IS was developed in an early lecture. Use this model as a template for your diagram. Make sure you include data capture, data input, data storage, data processing, output and attribution of meaning in your diagram.

2-For the IS give examples of raw data, validation of data, organised data, attribution of meaning, information, and decision making based on the information.

Part2 (3 +4 +2 +2 marks)

Part 2 ofthe assignment refers to the following case study. Read the case study carefully. The questions follow.

Water Usage Recording System (WURS) The countryside

surrounding Bendigo is covered with many irrigation channels.

During the irrigation season (Novemberto April) these channels are supplied

with waterfrom large reservoirs. Property owners are allowed to draw waterfrom a channel that crosses their property to fill their watertanks and dams. The water comes from an outlet in the irrigation channel in the form of a padlocked plastic pipe. A company called WaterEzy
is responsible for supplying irrigation waterto property owners along the irrigation channels and billing the property owners for the use

of water at the end ofthe irrigation season.

Property owners wishing to obtain waterfrom an irrigation channel crossing their land ring

WaterEzy to request a water Allowance for an irrigation season. Each Allowance is assigned a unique 5 digit number, a Channel number and
corresponding Channel name, and an Allowance amount of water available for the season (measured in Megalitres). Allowance amounts vary
between 1 Megalitre (an imposed minimum) and 100 Megalitres. The details of each Allowance are stored in a folderthat is in turn stored
in a filing cabinet. The folders are stored in Channel number orderthen Allowance number order. Each property owner receiving an Allowance
is sent an Allowance confirmation letter.

Generally a property owner will use their irrigation season’s water Allowance in a number of

Usages (that is, they will not use all their Allowance in the one go). When a property owner requires a water Usage from their channel they
phone an orderthrough to WaterEzy priorto 4pm the day before the water is required. A receptionist at Water Ezy asks for the channel
number, allowance number and the amount of water required. The receptionist retrieves the property owner’s folderfrom the carousel and
checks to see ifthey have enough water Allowance remaining. lfthey do, a water Usage is booked for the next day. If not the property owner
is given the opportunity to reduce the amount of waterthey order.

Between 4 and 5pm each afternoon a list is prepared for each Channel of

the property owners that have ordered a water Usage for the following day. The list is in Allowance number order and contains columns for
property owner name and address and the amount of water required. Empty columns for outlet opening and closing times (24 hour time) are
included.

Between 7 and 8am each morning, WaterEzy employees known as water bailifs retrieve the list of water Usage orders for the

channels for which they are responsible. During the day the water bailiffs drive out to each property owner’s land and open the padlock on
the outlet from the channel to the land. The water bailiff calculates roughly how long the outlet needs to be left open so that the property
owner has the water Usage they require. The water bailiff returns at the appropriate time to close the outlet. The times at which an outlet
was opened and closed are recorded on the list ofthe day’s water Usage orders.

On returning to the office at the end of a day, each water

bailiff hands the completed water Usage order list to an office worker. The next day the office worker works progressively through the lists
from the previous day. For each order on the list the office work retrieves the property owner’s folderfrom the filing cabinetl and updates

a Usage report that is included in the folder (including calculating the amount of water delivered). Below is an example of a property

owner’s Usage report.

(usage report will be uploaded to you soon.)

At the end ofthe irrigation season a District Usage report is

prepared. The report shows each Allowance in number order along with the amount of water used for the season. This report is used to prepare
the bills which are sent to each properety owner. Bills are produced and sent out by another section of Water Ezy. A District Usage
Statistics report is also produced for WaterEzy management. This shows total water usage for the whole District and for each Channel.

At

the end of each irrigation season the Allowance folders are archived.

Part 2 requirements

1-Draw a Context Diagram for the WaterEzy

Water Usage Recording System (WURS)

2-Draw a Level 0 Diagram for WURS

3-Decompose a Water Usage Report to its data elements.

4-Provide a

System Dictionary entry for the Outlet Closing Time data element

Submission requirements

The assignment should be stapled at the top left.

Title page:

Subject name

Assignment title

Student name

Student ID number

a signed Statement of Authorship

Table of contents

IS diagram

IS

descnpfion

Context and Level 0 Diagrams

Water Usage Report System Dictionary entry

BEWARE

Plagiarism will not be tolerated. If you

are caught plagiarising you will be reported to the Head of School. Be very careful that this assignment is your own work.

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