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Consistency Checking of <strong>Graph</strong>- <strong>Based</strong> <strong>Models</strong> When a specification becomes big... Softwaretechnologie II, © Prof. Uwe Aßmann 74
Example 1: Consistency Checking for Car Specifications ► Car data specifications in the MOST standard ■ Thousands of parts, described for an entire supplier industry ■ Many inconsistencies possible ■ Due <strong>to</strong> human errors ► Global variants of the cars must be described ► Examples of context conditions for global variants of cars: ■ The problem of English cars: A steering wheel on the right implies accelera<strong>to</strong>r, brake, clutch on the right ■ Au<strong>to</strong>matic gears: an au<strong>to</strong>matic gear box requires an au<strong>to</strong>matic gear-shift lever Prof. Uwe Aßmann, Softwaretechnologie II 75
Page 1 and 2:
How to</st
Page 3 and 4:
Obligatory Reading
Page 5 and 6:
Goals ► Understand that software
Page 7 and 8:
The Problem: How <
Page 9 and 10:
Partially Collapsed Prof. Uwe Aßma
Page 11 and 12:
Requirements for Modelling in Requi
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Example: Rename Refacto</st
Page 15 and 16:
Refactoring on Def
Page 17 and 18:
Data-Flow Graphs
Page 19 and 20:
Precise Call Graph
Page 21 and 22:
Types of Graphs in
Page 23 and 24: Definitions ► Fan-in ■ In-degre
Page 25 and 26: Trees ► One source (root) ► Man
Page 27 and 28: Directed Graphs (D
Page 29 and 30: Reducible Graphs (
Page 31 and 32: Strength of Assertions in M
Page 33 and 34: Structuring Improves Worst Case Lis
Page 35 and 36: Methods and Tools for Analysis of <
Page 37 and 38: Graphs and Fact Da
Page 39 and 40: Queries on Graphs
Page 41 and 42: Layering of Systems ► To be compr
Page 43 and 44: Pattern and Rules ► Parenthood ca
Page 45 and 46: Same Generation ► Beyond sisters
Page 47 and 48: Same Generation Introduces Layers
Page 49 and 50: Searching Graphs -
Page 51 and 52: Same Generation Datalog Program isP
Page 53 and 54: Description Logic (DL) ► Is a spe
Page 55 and 56: Application Areas of Datalog, DL, O
Page 57 and 58: Answer Alternative category text Ex
Page 59 and 60: Example: Web Queries with Logic ►
Page 61 and 62: Who is Descendant of Whom? ► Some
Page 63 and 64: Impact of Basic Rule GustavAdolf Ad
Page 65 and 66: [S|M][S|M]PP Path Problems: Variant
Page 67 and 68: Exercise: Railway Routes ► Base (
Page 69 and 70: Central Theorem of Datalog/DL/EARS
Page 71 and 72: Applications of Graph</stro
Page 73: Generic Datalog Queries ► Transit
Page 77 and 78: Second Idea ► Analyze</st
Page 79 and 80: Example 2: Consistency Checking of
Page 81 and 82: Second Idea ► Write queries that
Page 83 and 84: Example 3: UML Specifications in So
Page 85 and 86: Answer Alternative category text Ex
Page 87 and 88: Third Idea: Use Onto</stron
Page 89: The End Softwaretechnologie II, ©
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