Chapter 6 – Data Dictionary
Sample data dictionary format
Category: Data Flow Diagram DFD
Chapter 4 – DFD Level Diagram Violation Rule
1. Data source ——- Data source: Wrong 2. Data store ——- Data store: Wrong 3. Data source ——- Data store: Wrong 4. A processing step may have input flows but no output flows. This situation is sometimes called a black hole. 5. A processing step may have output flows but now input flows. This situation…
Chapter 3 – DFD Level 0 Diagram
1.What is the DFD Level 0 Diagram? -In this diagram, the system will be divided into processes as 1.0 2.0 3.0 4.0 5.0 -In the level 0 diagram, we will visualize the data flow between the data sources, data stores and processes 2.Element of Level 0 Diagram 2.1 Data Source -The data source is visualized…
Chapter 2 – DFD Context Diagram
1.What is the DFD Context Diagram? -This is the first level of the DFD. -In the context diagram, we just visualize the data flow between the data source and the system (0) 2.Element of DFD Context Diagram 2.1 The System -The system is visualized as rounded rectangle -We have the number 0 denoted on the…
Chapter 1 – What is Data Flow Diagram DFD?
1.What is Data Flow Diagram DFD? Data flow diagram is the diagram to visualize the flow of data from data source, data store and processes. 2.What are sub levels of Data Flow Diagram? 2.1 Context Diagram -This is the first level of the DFD. -In the context diagram, we just visualize the data flow between…
Chapter 5 – Structure English – Decision Tree – Decision Table
Chapter 7 – Control Flow Graph (CFG) – Draw Dominant Tree based on Dominant Table
Problem: In this sample, we will try to draw: 1.Control Flow Graph (CFG) 2.Dominant Table 3.Dominant Tree Sample Answer: