大3上revisionkxo203单位修订注意力.pdfVIP

Attention! • Be aware of how many marks are allocated to each question when you decide how much time to spend on each. • USUALLY, if a question (or section of one) has 4 marks allocated, then the examiner will be looking for 4 points (perhaps 8 at 0.5 mark each if they are simply a list of items). • If a question asks you to “compare and contrast” two items then it is asking you to o Identify things which are common to both (compare) o Identify important differences between them (contrast) • Describe and differentiate the content and use of • · A transaction-oriented database • · A data warehouse • [10 marks] •Transaction-oriented database • Database subject to much al tion. • Database highly normalised to protect anomalies. • May be relational but other are usible. • Manages integrity, consistency and security of data (multiple points here). • DB appears differently for different users (views) • Disaster management issues. • Data warehouse • Data is not altered once it is in the data warehouse • Data is not normalised s e there is no need for protection anomalies • Allows data/information to be treated as a resource. • Is a data resource for decision making (via DSS tools). • Enables accurate and detailed view of the business in a way which was impossible without this technology. • Can answer ad hoc questions about the business. • Describe clearly, ensuring that you highlight the differences, – what an Electronic Management Systems is – wh ontent Management System is • [10 marks] KXO203 单位修订注意力！ 当您决定在每个问题上花费多少时间时，请注意每个问题分配了多少分。 通常，如果一个问题（或一个问题的一部分）分配了 4 分，那么考官将寻找 4 分（如果它们只是一个项目列表，则可能为 8 分，每分 0.5 分）。 如果一个问题要求你 “比较和对比”两个项目，那么它要求你哦 找出两者的共同点（比较） 哦找出它们之间的重要差异（对