Dfd - Study guides, Class notes & Summaries

Black hole No process can have only inputs. If an object has only inputs, then it must be a sink If an object has only outputs it must be a source If an object has only inputs it must be a sink Context Diagram The least detailed level of data flow diagramming The diagram shows only the major information flows between the system and the external parties that interact with the system Outside sources/systems/agents You can tell something or someone is an outside source because you do not know d...

BIOSTAT FINAL EXAM QUESTIONS & ANSWERS 2024/2025 Which of the following statement(s) about ANOVA is(are) true? A. The ANOVA test assumes that the data are normally distributed B. The ANOVA test assumes that the sampled populations have identical variances C. The ANOVA test is used to compare variances D. The ANOVA test is used to compare means - ANSWERSA, B and D Which of the following statements best illustrates the Decision Rule for ANOVA? - ANSWERSAt a given alpha we reject the ...

Systems Analyst -Identifies the user requirements -Undertakes fact finding -Defines the system specification Project Manager -To oversee the project -To allocate the budget -Allocates resources- personnel, hardware, software, budget -Identifies risks -Reports back to the client Programmer -Writes the code from the module specification -Tests the code using a test plan -Debugs the code -Documents the code Purpose of analysis -Identify the requirements of the sy...

TEXTBOO1QuestionTEXTBOOK: CONTENT, DFD, AND ETHICS ASSIGNMENT INSTRUCTIONS INSTRUCTIONS Textbook Assignment and Easy Problem 1: Complete the following assignments and refer to your textbook chapter 4 for help. Denmark Corporation sells computer equipment to businesses in the western region of the United States. Each month, the IT division at Demark Corporation prints monthly statements and sends them to the accounts receivable (AR) department, where a clerk mails them to the customers. This corp...

The Entities of the ERD Equals correct answer: Data Stores of DFD Logical Database Modeling correct answer: Deals with gathering business requirements and converting those requirements into a model Logical Database Modeling Systems Requirements correct answer: Process Modeling: DFD Conceptual Data Modeling: ERD Logical Modeling Should Accurately Render correct answer: A visual representation of the activities and data relevant to a particular business Physical Database Modeling ...

DFD Advantages - Correct Answer -Simple notation -Allows focus analysis and changes -Depiction of parallel processes DFD Disadvantages - Correct Answer - No sequence of events - No timing considerations - No depiction of process details Flowcharts include... - Correct Answer looping and branching, DFD don't Logical Models - Correct Answer illustrate business requirements Physical Models - Correct Answer illustrate technical designs Logic Model Advantages - Correct Answer...

BCIS 4610 Question and answers verified to pass 2024 BCIS 4610, Chapter 7 Data Flow Diagram (DFD) - correct answer A picture of the movement of data between external entities and the processes and data stores withing a system. Data store - correct answer Data at rest, which may take the form of many different physical representations Process - correct answer The work or actions performed on data so that they are transformed, stored or distributed. Source/Sink - correct answe...

Modern Systems Analysis and Design Chapter 7-9 Graded A Data Flow Diagram (DFD) Concepts: 1. Data Flow Diagram (DFD): A visual representation showing the movement of data between external entities, processes, and data stores within a system. 2. Data Store: Data at rest, which can be represented in various physical formats. 3. Process: Actions performed on data to transform, store, or distribute it. 4. Source/Sink: The origin and/or destination of data, often referred to as external e...