Information models

Содержание и основные понятия

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Alterna · Chapter 20 · page 20.1
Information models
Definition, species, modelling stages.
In this chapter, the general theory of models is that it's, what it takes to build, how to build it, chapters 16, 22, 27 give details about graphal, hierarchical and normal shapes, and here it is a general picture.
GEF
PIF
OGE No. 9
EGE No. 1
01
Model definition
Model
is a simplified analogy of an object that preserves its essential properties.
The model is always easier than the original, otherwise it's not needed.
02
Model classification
🔨
Material
physical
The globe, the model, the stuffedo, we're looking at the original indirectly.
📝
Information
Description
Text, table, graph, formula, program.
⏸
Static
Status
Photo, map, drawing.
⏯
Dynamic
conduct
Simulation, video, motion formula.
03
Types of information models
📊
Table
objects x properties
Excel, OBD, the most common type.
🌐
Graph
vertebrate + ribs
Networks, relationships, ways.
Chapter 16
.
🌳
Hierarchical
tree
File system, classification.
Chapter 22
.
📐
Graphic
diagrams, drawings
Maps, diagrams, technical drawings.
🔢
Mathematical
formulas
Laws of physics, economic models, formulas.
💻
Programme
code
Simulation models, simulations, the most flexible type.
04
Modelling phases
Problem Statement
- what do we want to know?
Object analysis
- to highlight the essential properties.
Model building
- Select the form (formula, table, graph).
Decision / analysis
- to explore the model.
Interpretation
- to move the result to the original, check it out.
05
Model classification
20 examples — define the type of model
🎯
What kind of model is this?
0/0
06
Mini test
📝
6 modelling questions