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Unit 5: Data Modelling - Assignment 2 - Design, Create and Evaluate a Data Model (Grade: MERIT) (Cover Criteria: P3, P4, P5, P6, P7, M2, M3, D2)$7.31
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This document received a MERIT covering aims: 3, P4, P5, P6, P7, M2, M3 in unit 5: Data Modelling in Pearson's BTECC level 3 course in Information Technology.
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Contents
Time planning 3
Design 4
Nature of the problem 4
Functions the model must perform 4
Required inputs and validations 5
Sheets in the data model 6
Diagrams of sheets 8
User interface and navigation 12
Constraints 13
Success criteria: 14
Peer review on design 15
Changes made on the design based on feedback 20
Justifying decisions made for the design and how it fulfils its purpose and clients
requirements 24
Peer review of data model 27
Email responses 27
Form responses 28
Positive feedback 28
Negative/suggestive feedback 31
Changes and optimisation based of peer feedback 33
Before optimisation 37
After optimisation 38
, Testing 39
Testing- functions 39
Testing - formulas and calculations 40
Testing - user interface 42
Testing - validation/verification/formatting 43
Evaluation of data model 44
Evaluation of demonstration of individual responsibility and self management. 47
Time management 47
How well did I manage my time? 48
,Time planning
Task Description Planned Planned
duration start/end
data
1.0 Create initial 3 days 11/06/2022-
Functional design for the 13/06/2022
specification data model
1.1 Get people to 1 day 14/06/2022-
Design peer view and give 14/06/2022
review feedback on
review
1.2 Change design 1 day 15/06/2022-
Act on design based on the 15/06/2022
feedback feedback
received
2.0 Create the initial 3 days 15/06/2022-
Data model data model 17/06/2022
2.1Data model Get people to 1 day 17/06/2022-
peer review view, use and 17/06/2022
review data
model
Act of data Make changes 1 day 17/06/2022-
model and 17/06/2022
feedback optimisations
based on
feedback
3.0 Evaluate the 1 day 17/06/2022-
Data model data model; 17/06/2022
evaluation requirements,
usability etc.
, Design
Nature of the problem
A company, who import cheeses from France and the Netherlands, and supply
restaurants/specialist delicatessens in the UK want data models created. This is because
they are impacted by the fluctuations in exchange rates, on the Euro and the Sterling; they
buy in Euro (France and Netherlands currency) and sell in Sterling(UK’s currency).
The company’s products are relatively expensive and sell better when economic growth is
good and worse when it is bad.
When the exchange rate increases the company could decrease their margin so their
product sells for the same price which would lower profit margins; this would improve
customers' view of the company's reliability and consistency meaning it would be probable
for their number of sales to be similar to before the rate increase; or the company could
increase the prices of their cheese products which would keep the profit margins the same,
but would likely decrease their sales.
The company has found a trend using a base exchange rate of 0.7 between the Euro and
Sterling; It shows that increasing and decreasing the sale prices, based on if the exchange
rate goes above or below said base rate, decreases or increases unit sales (20 units
increase/decrease in sales, per 10p increase/decrease in sale price).
This means that the data found from this trend can be used as a constant when used in the
data model and its formulas.
Functions the model must perform.
Menu
● The function of a working menu must be implemented to make it easy for the user to
be able to navigate through the data model.
● Every button must work and take the user the correct page, from every page; and the
main menu should be easily accessible.
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