4.3 DATA FLOW DIAGRAM A data flow diagram is a graphical technique that depicts information flow and transforms that are applied as data move from input to output. The DFD is also known as Data Flow Graph or Bubble Chart. The DFD is used to represent increasing information flow and functional details. Also DFD can be stated as the starting point of the design phase that functionally decomposes the requirements specifications down to the lowest level of detail. A Level 0 also called a fundamental
Premium Data flow diagram
Accuracy of data input is important. What method of data input would be best for each of the following situations and why: * Printed Questionnaires: * Keyboard and mouse * User can type data using the keyboard and use the mouse to click/select pieces of data * Telephone Survey: * Voice input device * Surveys may be set up to function using voice recognition for users responding
Premium Computer data storage USB flash drive Floppy disk
common carrier circuits. _____3. Which of the following would be a standard used at the Data Link layer of the Internet or OSI model? k) IP l) TCP m) Ethernet n) HTTP o) FTP _____4. In which layer of the Internet model would the HTTP standard be used? p) physical q) application r) transport s) network t) data link _____5. The network layer of the Internet model uses the _____________ protocol to
Premium OSI model Data Link Layer Ethernet
Advances in Data Storage Technology Contents I. Introduction 3 II. Purpose of storage 4 III. Hierarchy of storage 6 A. Primary storage 6 B. Secondary storage 7 C. Tertiary storage 7 D. Off-line storage 8 IV. Characteristics of storage 9 A. Volatility 9 B. Mutability 9 C. Accessibility 10 D. Addressability 10 E. Capacity 11 F. Performance 11 G. Energy
Premium Computer data storage
MC; 6pages of short answers Review – labs • • Travel over the internet; TCP/UDP is from end to end‚ IP is in the middle‚ between hops o Write email – this is data o Data is sent to the transport layer and is SEGMENTED‚ adds s/d PORT # and sequence number o Network layer turns these into packets with s/d ip address o Data link layer turns these into frames with s/d mac address for default gateway o Frames go to switch and switch checks source mac and learns it if it doesn’t o Switch
Premium Ethernet OSI model IP address
The importance of data for operations management and decision making In order to be able to make well guided decisions‚ one needs well based facts and therefore one is in continuous need of quality data. The same goes for operations management; data of substance is a must to run a company in its optimal levels of efficiency‚ effectiveness and capacity. The five levels of Data Quality Maturity according to Gartner are Aware‚ Reactive‚ Proactive‚ Managed and Optimized. Using these levels and applying
Premium Management Costa Rica Decision making
will be comparing and contrasting transactional databases and data warehouses‚ demonstrating the similarities and differences between them both. I will do this by first defining these database systems and the reason for their use. I will also be using key relevant theories and tools to back up my findings‚ to argue their differences and similarities as efficiently as possible. Where similarities between transactional databases and data warehouses do exist they are in the areas of information storage
Premium Database Database management system Data warehouse
product. A) Electronic data interchange (EDI) B) Business processes C) Trading partners D) Transaction 2. The group of logical‚ related‚ and sequential activities and transactions in which businesses engage are often collectively referred to as ____. A) Electronic data interchange (EDI) B) Business processes C) Trading partners D) Transaction 3. ____ occurs when one business transmits computer-readable data in a standard format to another business. A) Electronic data interchange (EDI) B)
Premium Electronic Data Interchange Strategic management Marketing
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
Premium Data flow diagram Ticket Credit card
Analyzing and Interpreting Data Ballard Integrated Managed Services (BIMS) conducted an internal survey for 440 employees‚ excluding top management‚ asking 10 questions on morale and four questions on demographics. BIMS upper management noticed a change in staff morale and an increase in the staff turnover rate‚ which initiated the survey. Barbara Tucker‚ General Manager‚ wants to discover what is making employees want to leave and has enlisted the help of Debbie Horner. Debbie Horner‚ human
Premium Quantitative research Question Qualitative research