mywbut.com Data Flow Diagrams (DFDs) 1 mywbut.com Specific Instructional Objectives At the end of this lesson the student will be able to: • • • Identify the activities carried out during the structured analysis phase. Explain what a DFD is. Explain why constructing DFDs are important in arriving at a good software design. • Explain what a data dictionary is. • Explain the importance of data dictionary. • Identify whether a DFD is balanced. Structured Analysis Structured analysis
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to : Data Flow Diagrams (DFDs) Data Flow Diagrams (DFDs) Data flow diagram (DFD) is a picture of the movement of data between external entities and the processes and data stores within a system Order CUSTOMER Status Message Status Data 2.0 Shipping Confirmation In-Stock Request WAREHOUSE 1.0 Shipping Order Check Status Order Data D1 Pending Orders 3.0 Issue Status Messages Order Data Payment Invoice Manage Accounts Receivable 5.0 Accounting Data Accounts Receivable Data 4.0
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BCM432 INFORMATION COMUNICATION TECHNOLOGY HISTORY OF DATA STORAGE GmanJye 2013 GmanJye 11/04/2013 Definition of Data Storage * * Storage Devices are the data storage devices that are used in the computers to store the data. The computer has many types of data storage devices. Some of them can be classified as the removable data Storage Devices and the others as the non removable data Storage Devices. * * Data storage can refer to anything with information recorded on it. Using
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Need to Collect HR Data Page 6 – Activity 2: Analysing HR Data Page 7 - Referencing list Activity 1 Introduction “Accurate personnel records will help the organisation in many ways - increasing the efficiency of recruitment‚ training and development‚ and promotion. They can also provide the raw data to monitor equal opportunities issues and the legal requirements placed on all organisations” [ACAS: Online 27 January 2014]. This Data Management report will
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Flowcharts System Flowcharts Guidelines for Drawing System Flowcharts PROBLEMS CASE ANALYSES The Berridge Company FreezeTime‚ Inc. The Dinteman Company Lois Hale and Associates PROCESS MAPS AND DATA FLOW DIAGRAMS Process Maps Guidelines for Drawing Process Maps Data Flow Diagrams Guidelines for Drawing Data Flow Diagrams REFERENCES AND RECOMMENDED READINGS ANSWERS TO TEST YOURSELF OTHER DOCUMENTATION TOOLS Program Flowcharts Decision Tables Software Tools for Graphical Documentation and SOX
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Table of Contents Introduction………………………………………………………………………..…………………………….…2 1.Data Compression……………………………………..………………………………………………………2 1.1Classification of Compression……………………………………………………………………...2 1.2 Data Compression methods…………………………………………..……………………………3 2. Lossless Compression Algorithm……………..……………………………………………………….4 2.1 Run-Length Encoding……………………..…………………………….……………………………4 2.1.1 Algorithm……………………………..………………………………………………………………….5 2.1.2Complexity ……………………………..………………………………
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Data Encryption Standard In 1972‚ the NBS Institute for Computer Sciences and Technology (ICST) initiated a project in computer security‚ a subject then in its infancy. One of the first goals of the project was to develop a cryptographic algorithm standard that could be used to protect sensitive and valuable data during transmission and in storage. Prior to this NBS initiative‚ encryption had been largely the concern of military and intelligence organizations. The encryption algorithms‚ i.e.‚ the
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NAME: ___________________________ SECTION: _____________ I. Multiple Choice: Encircle the best answer. (20 pts) 1. It is a data structure that contains an undefined number of elements a. Static array b. Stacks c. Dynamic array d. Pointers 2. Given the expression 2 / 5 * 6 / ( 7 + 8 – 9 * 1 ) – 2 * 3‚ its postfix equivalent is: a. 2 5 / 6 * z 8 / 9 1 * – 2 3 * – b. 2 5 / 6 * z 8 + 9 1 * – 2 3 / * – c. 2 5 / 6 * z 8 + 9 1* – / 2 3 * – d. 2 5 6 * / z 8+ 9 1 * – / 2 3 *
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com/Articles.nsf/aid/BLACP01 11 Steps to Successful Data Warehousing Mining your corporate data for valuable customer information can improve your business performance. But it’s not as simple as it sounds. By Phillip Blackwood There are 4 reader comments on this topic. Add yours! More and more companies are using data warehousing as a strategy tool to help them win new customers‚ develop new products‚ and lower costs. Searching through mountains of data generated by corporate transaction systems can
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This study will require data to be gathered from all persons involved with the domestic violence shelters‚ which will include donors‚ executives‚ employees‚ and volunteers. The data that will be collected during this study will be relevant to the perceptions of the domestic violence shelters’ executives‚ employees‚ and volunteers’ role versus what the donors to the shelters perceive to be the roles of the people that work on either a paid or volunteer basis. The data collection methods will include
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