IB Computer Science Year 2 Standard Level - September 1 2017 Lesson Notes

What are we going to learn today? Hello Class! Computational thinking today!! We will take a 3 to 5 minute break to get grounded We will consider this problem: An examination office of a university must securely store students’ examination papers and their grades. The office keeps the documentation of past students for two years. After two years the office only stores the student grades. All documentation of current students is frequently accessed for other operations and the volume of the data increases quickly. To better support its operations, the office is creating a new system to provide this storage. * (a) Identify two aspects of the data that need to be taken into account during the planning of the new system. [2] * (b) Describe how direct observations on the current system may provide information to help propose a suitable new system. [3] A prototype of the new system is created to present to the examination office. * (c) Describe the purpose of this prototype. [3] The examination office needs to upgrade the computing resources for their operations, and this will require data migration. * (d) Discuss two possible problems that may occur during data migration. [4] * (e) Outline one economic aspect that the examination office needs to take into account to support parallel running.	What is our homework? Please enjoy your weekend
How am I being assessed today? I will assess you formatively today, and make a professional judgement to what extent you understand our learning material. I will use observation, your written work, answers to questions, and contribution to class discussions as data to make my decisions. I normally record my observations in a "evidence of learning" spreadsheet, which I will happily share with you privately if you so wish. I usually need a day or two notice.
As a computer scientist, you have: Confidence in dealing with complexity Persistence in working with difficult problems Tolerance for ambiguity The ability to deal with open-ended problems The ability to communicate and work with others to achieve a common goal or solution
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Provide an answer from a number of possibilities. Recognize and state briefly a distinguishing fact or feature.

Give a detailed account or picture of a situation, event, pattern or process.

Offer for display, observation, examination or consideration.

Offer a considered and balanced review that includes a range of arguments, factors or hypotheses. Opinions or conclusions should be presented clearly and supported by appropriate evidence.

Give a brief account.

Consider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument.