development of the Internet from web 1.0 to web 3.0. Marion Villanyi ST20035596 Introduction The web was created in 1989 by Sir Til Berners-Lee‚ working at CERN (The European Organization for Nuclear Research) in Geneva‚ Switzerland. A web service is defined as a software system designed to support computer-to-computer interaction over the Internet. The World Wide Web‚ and related technologies‚ has had much progress since its advent. Nowadays‚ we speak about Web 1.0‚ 2.0‚ 3.0 and even 4.0 and
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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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Do the Sahara Desert and Arctic Region have a high or low bio-diversity compared to a rainforest explain your statement? The bio-diversity of the Arctic and the Sahara are minute compared with the high levels of biodiversity that the rainforest possesses‚ the Arctic and the Sahara are placed in regions where the conditions for a living organism to survive and nurture is harsh and ruthless. Suitable environmental conditions are the ideal regions in which living organisms should live in as it allows
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Title Freezing and Melting Point Objectives 1. To gain proficiency in constructing a graph and plotting data points. 2. To determine the freezing points of a compound from the graph of decreasing temperature versus time. 3. To determine the melting points of a known and unknown compound. Introduction Physical changes are the changes in the physical properties of a substance (Moore‚ Stanitski & Jurs‚ 2009). Freezing point is the fixed temperature at which a pure liquid converted into crystalline
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System Analysis and Design/ Tools for systems analysts Learning Objectives Learning 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
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“It is not often that someone comes along who is a true friend and a good writer.” “After all‚ what’s a life‚ anyway? We’re born‚ we live a little while‚ we die.” “You have been my friend. That in itself is a tremendous thing. I wove my webs for you because I liked you. After all‚ what’s a life‚ anyway? We’re born‚ we live a little while‚ we die. A spider’s life can’t help being something of a mess‚ with all this trapping and eating flies. By helping you‚ perhaps I was trying to lift up
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releasing more energy and waves of shorter wavelengths. 3. a. Draw the energy-level diagram and write the electronic configuration for zirconium (element 40). (3 marks) Energy-level diagram for zirconium is drawn below: 4d 5s 4p 3d 4s 3p 3s 2p 2s 1s Electronic configuration for zirconium is given below: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2 b. Use the diagram to explain why the Zr4+ ion exists. (2 marks) When the outer orbitals are filled with
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Patient leaves If Follow Up appointment requires then make an Appointment Date‚ Patient leaves Question 2: Draw the Event Process Chain Diagram for a Business Process based on the following Activities. The following are the Events and Functions for a Business Process. Develop an Event Process Chain (EPC) Diagram by using the three connectors OR‚ AND‚ XOR. Activities: If the customer order is received‚ check for the availability‚ either the articles are available or
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future of web design is concerned about progressing above and beyond manipulative for one device. It is all concerned about mobiles‚ but mobiles are of vital importance. Users of the web are accessing the web from different sources such as tablets‚ laptops‚ mobile smartphones and desktop computers. The websites need to keep on changing to adapt and respond to various platforms in an effective and fluent manner. For a long duration‚ web design was based on print design practices‚ but the web has never
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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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