1.3 Exchanging data

This section introduces students to different systems and how data is exchanged between them. Areas covered include:

          * Flat files and relational databases

          * Different types of keys

          * Capturing, selecting, managing and exchanging data

          * Networks, protocols, standards and security

          * The structure of the internet, including TCP/IP, DNS, LANs and WANs and switching

          * HTML, CSS, JavaScript and search engines

          * Lossy and lossless compression

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