Objectives What are Data Flow Diagrams (DFDs)? Why they are useful? How are they developed? How to level DFDs? Good style conventions in developing DFDs Difference between Logical and Physical DFDs Tools available to draw DFDs V. Rajaraman/IISc. Bangalore //V1/June 04/1 System Analysis and Design/ Tools for systems analysts Motivation Motivation WHY DFD ? Provides an overview of -What data a system processes -What transformations are performed -What data are stored -What
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Level (0) Data Flow Diagram [pic] Level (1) Data Flow Diagram of General Enquiry [pic] Level 1DFD of Passenger Enquiry Section [pic] Level 2 DFD of Booking [pic] Level 2 DFD Cancellation ----------------------- Passenger 1.0 General Enquiry 2.0 Passenger Enquiry 3.0 Booking Counter 4.0 Cancellation Information Booking Inquiry
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TYPES OF DATA FLOW DIAGRAM: LOGICAL DFD PHYSICAL DFD Data Flow Diagrams (DFDs) are categorized as either logical or physical. A logical DFD focuses on the business and how the business operates. It describes the business events that take place and the data required and produced by each event. On the other hand‚ a physical DFD shows how the system will be implemented. Design Feature Logical Physical What the model depicts How the business operates How the system will be implemented
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A Project on service time variation in Café coffee day Structure • Service time • Project methodology • Analysis • Observation and recommendation What do we sell? • Experience • Physical product • Ambience • Service Quality of service depends on following aspects: • Quality of customer and staff interaction • Quality of complaint handling • Optimum service time Optimum service time What is it? For this project‚ we have taken it as the time interval
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Café Coffee Day is a chain of coffee shops in India having its headquarters in Chikkamagaluru‚ Karnataka.[2] A division of Amalgamated Bean Coffee Trading Company Ltd. (ABCTCL)‚ it is commonly known as Coffee Day or CCD. It opened its first cafe in 1996 on Brigade Road in Bangalore‚ and today has the largest cafe retail chain in India – with over 800 cafes in 112 cities. Large number of coffee day cafes are located in Bangalore. The cafe chain has had much success riding‚ and to some extent creating
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Café Coffee Day (CCD) is a subsidiary of India’s largest coffee conglomerate‚ Amalgamated Bean Coffee Trading Company Ltd. (ABCTCL). ABCTCL grows coffee in its own estates of 10‚500 acres. It is the largest producer of Arabica beans in Asia. ABCTCL is one of India’s leading coffee exporters. Mr. V.G. Siddhartha founded CCD in 1996. The first CCD outlet was setup on July 11‚ 1996 at Brigade Road‚ Bangalore. As of today they have 1481 outlets across the nation. They acquired Café Emporia‚
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Framework 4. Operational Definition of Terms METHODOLOGY 1. Methods of Research 2. Data Gathering Techniques 3. Statistical Treatment of Data (optional) SYSTEM PRESENTATION A. Existing System 1. Company Background 2. Description of the System 3. Process Flow of the System 4. Analysis of the System B. Proposed System 1. Description of the System 2. Objectives of the System 3. Scope and Limitation of the System 4. Process Flow of the System 5. System Specifications a. Features of the System b. Hardware Requirement
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EXISTING POINT OF SALES BLOCK DIAGRAM PACKAGING OF ITEMS GENERATING RECEIPT (MANUALLY) COMPUTING OF TOTAL PRICE SEARCHING OF ITEM ORDER OF ITEM CONTEXT DIAGRAM ORDER OF ITEM SEARCHING OF ITEM COMPUTING THE TOTAL PRICE GENERATING RECEIPT (MANUALLY) PACKAGING OF ITEMS CUSTOMER PHARMACIST FIRST LEVEL DATA FLOW DIAGRAM 1 PLACE AN ORDER 2 SEARCHING OF ITEM PHARMACIST PACKAGING OF ITEMS CUSTOMER ITEM NAME ORDERED
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Pher Pher A data flow diagram (DFD) is a graphical representation of the "flow" of data through an information system‚ modeling its process aspects. Often they are a preliminary step used to create an overview of the system which can later be elaborated.[2] DFDs can also be used for the visualization of data processing (structured design). A DFD shows what kinds of data will be input to and output from the system‚ where the data will come from and go to‚ and where the data will be stored. It
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The procedure for producing a data flow diagram • Identify and list external entities providing inputs/receiving outputs from system; • Identify and list inputs from/outputs to external entities; • Draw a context DFD Defines the scope and boundary for the system and project 1. Think of the system as a container (black box) 2. Ignore the inner workings of the container 3. Ask end-users for the events the system must respond to 4. For each event
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