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CoNtENtS xi

part III the analySIS proceSS 179

7 uSIng data Flow dIagramS 179
the data Flow approach to human requirements determination 180
Advantages of the Data Flow Approach 180 / Conventions Used in Data Flow Diagrams 180
developing data Flow diagrams 181
Creating the Context Diagram 182 / Drawing Diagram 0 (The Next Level) 183 / Creating
Child Diagrams (More Detailed Levels) 184 / Checking Diagrams for Errors 184

logical and physical data Flow diagrams 186
Developing Logical Data Flow Diagrams 189 / Developing Physical Data Flow
Diagrams 190 / Partitioning Data Flow Diagrams 192

a data Flow diagram example 194
Developing the List of Business Activities 195 / Creating a Context-Level Data Flow
Diagram 195 / Drawing Diagram 0 195 / Creating a Child Diagram 196 / Creating a
Physical Data Flow Diagram from the Logical DFD 196 / Partitioning the Physical
DFD 197
partitioning websites 199
communicating using data Flow diagrams 202

Consulting opportunity 7.1 There’s No Business Like Flow Business 203
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hYPERCASE EXPERiENCE 7 204
summary 204
Keywords and Phrases 205
review Questions 205
ProBlems 205
grouP ProjeCts 207
seleCted BiBliograPhy 207

8 analyzIng SyStemS uSIng data dIctIonarIeS 209

the data dictionary 210
Need for Understanding the Data Dictionary 210
the data repository 210
Defining the Data Flows 212 / Describing Data Structures 213 / Logical and Physical Data
Structures 213 / Data Elements 215 / Data Stores 218
creating a data dictionary 219
Consulting opportunity 8.1 Want to Make It Big in the Theatre?
Improve Your Diction(ary)! 221
Analyzing Input and Output 221 / Developing Data Stores 221
using a data dictionary 222
Using Data Dictionaries to Create XML 224 / XML Document Type
Definitions 227 / XML Schemas 228
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hYPERCASE EXPERiENCE 8 229
summary 229
Keywords and Phrases 230
review Questions 230
ProBlems 230
grouP ProjeCts 232
seleCted BiBliograPhy 233