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1) – What is relational database model? – Think about two tables (aka files) in your field that have a one-to-many relationship with each other similar to student and advisor or doctor and patient do. – How many fields and how many records are there in the client file in step 2 of the relational database model exercise reading. – Draw an Entity Relationship Diagram similar to the one in figure 1, using the two entities that you propose above. Make up the list of field in each entity box according to your database scenario. Pay attention to the primary key and foreign key and the link between them. Use Insert tab à Shape in word to draw this. Here is an example for doctor and patient entity relationship diagram. ***I HAVE CLASSMATE EXAMPLES**** 2. Read the part in the chapter about information systems pay attention to the definition of information system and different types of information systems, then read the two extra readings in the folder; Components of Information Systems and the Information System Exercise File (only read the first case about NEWGIN in this file). Use your understanding of the facts from the NEWGIN case along with your knowledge from previous chapters to write on the following: o Briefly introduce the system, the name, the type of system, the purposes of the systems, and its evolution. o The relationship between the system with other systems that the organization uses. Detail description of each component of Information System. o Different people and groups that use the system o Software (name, versions, types of software). o Hardware (5 components of hardware: input, processing, output, storage, communication devices). o Data and Database ( type of data processed by the system, DBMS used to store data, internal and external data). o Communication networks – type of networks LAN, WAN, Intranet, Extranet, VPN, communication devices and other components of networks that you learned previously and that might be applicable to this system. o Procedures to control and maintain the systems (security, legal, data integrity, training and standard operating procedures, standard reports) if there is any or something you can imagine. Think about security and system safeguard procedures/methods that we learned in chapter 5.
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