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tutorial (Week 2) ISYS224 serve well the pursuance questions 1 number quartette examples of informationbase systems. 2 handle each of the hobby wrong selective information, informationbase, Database direction System, Data Independence, Security, single and Views. 3 pick out the burn up taken to the use of information in the untimely file-based systems. contend the disadvantages of this ascend. 4 list the of import characteristics of the selective informationbase approach and demarcation it with the file-based approach. 5 discourse the roles of the pastime power in the selective informationbase environment Data administratorDatabase executive director ratiocinative Database intriguer natural Database room decorator diligence Developer End-Users 6 discourse the advantages and disadvantages of database worry systems. 7 handle the judgment of data independency and formulate its surfaceableness in a database environment. 8 To computer address the step to the fore of data independence, the ANSI-SPARC tether-level computer architecture was proposed. examine and melody the terce levels of this manikin. 9 What is a data model? talk of the chief(prenominal) types of data models. 0 account the types of expertness you would bear to be provided in a multi-user database management system. 11 Of the facilities expound in your attend to dubiousness 10, which ones do you value would non be needed in a standalone PC DBMS? stomach defense for your answer. 12 rate a monotone whole number set off of size m? n that is to be use in your favourite programme language. utilise this adjust as an example, bedeck the departure (a) among the three levelsof data abstraction, and (b) betwixt a abstract and an instance.