《信息系统管理实践第七章课件information systems management in practice》由会员分享，可在线阅读，更多相关《信息系统管理实践第七章课件information systems management in practice（65页珍藏版）》请在金锄头文库上搜索。
1、Managing Information ResourcesChapter 7Information Systems Management In Practice 6E McNurlin Asset = information that runs on that infrastructure It also raises a number of management issues27Managing Information Four Types of Information In Figure 7-3 we looked at a matrix representing the full sc
2、ope of data information resources: Internal record-based information, such as those found in databases Which we discussed in detail but there are others: Internal document-based information, such as reports, opinions, e- mails and proposals. Pertains to concepts: ideas, thoughts, etc. External/recor
3、d-based information, such as acquisition from external databases. External/document-based: WWW282930Managing Information Four Types of Information cont. Internal record-based information was the original focus of IS departments because it is the type of information that computer applications generat
4、e and manage easily External record-based = accessible via Internet or public databases Including subscription Until recently = little attention to internal and external document-based information because it was so difficult to manipulate in computers Intranets changed this Documents = integral part
5、 of information on these sites Responsibility = now on IS, even if just for technical issues Four areas were responsibility of different areas but now IS is likely to be involved in some way3132Managing Information Data WarehousesData warehouse: Houses data used to make decisions This data is obtain
6、ed periodically from transaction databases The warehouse provides a snapshot of a situation at a specific time Data warehouses differ from operational databases in that they do not house data used to process daily transactions Operational databases have the latest data Data warehouses = not so time
7、critical Like ERP systems, they, too, spurred getting record-based data into shapeThe most common data warehoused are customer data, used to discover how to more effectively market to current customers as well as non-customers with the same characteristics 33Managing Information Data Warehouses cont
8、.The simplest (MIS) tools generate perforated reports or permit ad hoc queriesWarehouses are reaching beyond reporting internal data They are being combined with purchased data, such as demographic data, late breaking news and even weather reports, to uncover trends or correlations that competitors
9、might not spot To give a company a competitive edge34Managing Information Data Warehouses cont.Key Concepts: Metadata: The part of the warehouse that defines the data. Metadata means “data about data.” Metadata explains the meaning of each data element, how each element relates to each other, etc. I
10、t sets the standard without it data from different legacy systems cannot be reconciled, so the data will not be “clean” Quality data: Is the cleaning process to adhere to metadata standards The older the data the more suspect its quality Data marts: Is a subset of data pulled off the warehouse for a
11、 specific group of users In the early 1990s, one huge warehouse was envisaged, but proved un- practical due to long search times and large cost factors35Managing Information Data Warehouses cont. 5 Steps in a Data Warehousing Project: nDefine the business uses of the data nCreate the data model for
12、the warehouse i.e. defining the relationships between the data elements nCleanse the data nSelect the user tools Consider the users point of view by selecting the tools they will use hence, the importance of document management The field of electronic document management (EDM) uses new technologies
13、to manage information resources that do not fit easily into traditional databases EDM addresses organizing and managing conceptual, descriptive, and ambiguous multimedia content. Applying technology to process traditional documents makes a major change in what documents can accomplish in organizatio
14、ns40Managing Information Document Management cont.It is hard to think of anything more pervasive and fundamental to an organization than documentsThe impact of applying emerging technologies to document management is potentially significantEDM contributes to business process redesignNumerous EDM app
15、lications generate value. The Big 3 are:To improve the publishing processTo support organizational processesTo support communications among people and groupsThe concept of just-in-time (printing, publishing and forms processing) pervades the design philosophy in all three areas 41Document Management
16、: Improving the Publishing Process Technology enables a major restructuring of the process of publishing and distributing paper documents Traditional Process designed primarily for high volume and high quality documents shown in Figure 7-6 Process has inefficiencies: Infrequent long print run requires storing documents which become obsolete between runs 60% of th
