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Summary Level 3 IT Unit-5 Data Modelling Learning aim A (Distinction level work) £3.99
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  2.  
  3. PEARSON (PEARSON)
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  5. Information Technology 2016/2017 NQF
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  7. Unit 5 - Data Modelling

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Summary Level 3 IT Unit-5 Data Modelling Learning aim A (Distinction level work)

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Distinction level work for the level 3 IT Unit 5 Spreadsheet/ Data Modelling unit part A. Most of the content is in the notes section of each slide.

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  • August 6, 2023
  • 45
  • 2022/2023
  • Summary

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Unit 5
Data
Modelling
Investigating data modelling and
how it can be used in the
decision-making process


Part A

,Contents:
 What is a data model? 5
The Stages in the Decision-Making 6
Process 7
 Why is understanding the scenario important? 8
 Identifying the information and sources 9
 Factors affecting the quality of information 10
 Analysing the information 11
 Identifying alternatives 4 12
 Consequences of alternatives 13
 Making a decision 14
 Justifying the decision 15
 Communicating the decisions to others 16
Spreadsheet Features used to support 17
data modelling 18
 Entering and editing data 19
 Formatting Data 20
 Formulas 23
 Functions
 Validation and Verification

,Contents:
 Analysing and Interpreting Data 24
 Presenting Data 25
 Using Data Modelling to Consider 26
Alternatives 27
 Identifying the Inputs Required 28
 The Range of Outputs Produced 29
 Benefits and Limitations of Alternate Solutions 30
 Impacts and Consequences of each Solution 4 31
 Identifying the Solution that Produces the Best 32
Decision 33
 Evaluating Models 34
 Factors to consider when evaluating the model 35
 How well the model reflects the Scenario 36
 Decisions that can be made using the Model 37
 Whether the Model can be Improved 38
 Other Factors 39
 Documenting and Justifying Decisions 40
 Requirements for Documenting and Justifying the
Model
 Summarising the Situation

,Contents:
v Identifying Information Sources 41
v Indicating Factors Considered 42
 Methods used to Research Decisions 43
 Justifying Choices 44
 Sources 45


4

,Introduction
What is a data model?
A data model is used by a company to represent data.
Data models mimic real life situations where
business decisions need to be made.
The 3 key types of data modelling are:
Conceptual

Logical

Physical

, The Stages in
the Decision-
Making Process

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