Data and Knowledge Management CHAPTER 5. 5.1 Managing Data 5.2 The Database Approach 5.3 Database Management Systems 5.4 Data Warehouses and Data Marts.

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Slide 1Data and Knowledge Management CHAPTER 5 Slide 2 5.1 Managing Data 5.2 The Database Approach 5.3 Database Management Systems 5.4 Data Warehouses and Data Marts 5.5 Knowledge Management CHAPTER OUTLINE Slide 3 1. Identify three common challenges in managing data, and describe one way organizations can address each challenge using data governance. 2. Name six problems that can be minimized by using the database approach. 3. Demonstrate how to interpret relationships depicted in an entity-relationship diagram. 4. Discuss at least one main advantage and one main disadvantage of relational databases. LEARNING OBJECTIVES Slide 4 5. Identify the six basic characteristics of data warehouses, and explain the advantages of data warehouses and marts to organizations. 6. Demonstrate the use of a multidimensional model to store and analyze data. 7. List two main advantages of using knowledge management, and describe the steps in the knowledge management system cycle. LEARNING OBJECTIVES (CONTINUED) Slide 5 ANNUAL FLOOD OF DATA FROM.. Credit card swipes E-mails Digital video Online TV RFID tags Blogs Digital video surveillance Radiology scans Source: Media Bakery Slide 6 ANNUAL FLOOD OF NEW DATA! In the zettabyte range A zettabyte is 1000 exabytes Fanatic Studio/Age Fotostock America, Inc. Slide 7 5.1 MANAGING DATA The Difficulties of Managing Data Data Governance Slide 8 DIFFICULTIES IN MANAGING DATA Source: Media Bakery Slide 9 DATA GOVERNANCE See videovideo Data Governance Master Data Management Master Data Slide 10 MASTER DATA MANAGEMENT John Stevens registers for Introduction to Management Information Systems (ISMN 3140) from 10 AM until 11 AM on Mondays and Wednesdays in Room 41 Smith Hall, taught by Professor Rainer. Transaction Data Master Data John StevensStudent Intro to Management Information SystemsCourse ISMN 3140Course No. 10 AM until 11 AMTime Mondays and WednesdaysWeekday Room 41 Smith HallLocation Professor RainerInstructor Slide 11 Database management system (DBMS) minimize the following problems: Data redundancy Data isolation Data inconsistency 5.2 THE DATABASE APPROACH Slide 12 DBMSs maximize the following issues: Data security Data integrity Data independence DATABASE APPROACH (CONTINUED) Slide 13 DATABASE MANAGEMENT SYSTEMS Slide 14 Bit Byte Field Record File (or table) Database DATA HIERARCHY Slide 15 HIERARCHY OF DATA FOR A COMPUTER-BASED FILE Slide 16 Bit (binary digit) Byte (eight bits) DATA HIERARCHY (CONTINUED) Slide 17 Example of Field and Record DATA HIERARCHY (CONTINUED) Slide 18 Example of Field and Record DATA HIERARCHY (CONTINUED) Slide 19 Data model Entity Attribute Primary key Secondary keys DESIGNING THE DATABASE Slide 20 Database designers plan the database design in a process called entity-relationship (ER) modeling. ER diagrams consists of entities, attributes and relationships. Entity classes Instance Identifiers ENTITY-RELATIONSHIP MODELING Slide 21 RELATIONSHIPS BETWEEN ENTITIES Slide 22 ENTITY-RELATIONSHIP DIAGRAM MODEL Slide 23 Database management system (DBMS) Relational database model Structured Query Language (SQL) Query by Example (QBE) 5.3 DATABASE MANAGEMENT SYSTEMS Slide 24 STUDENT DATABASE EXAMPLE Slide 25 Normalization Minimum redundancy Maximum data integrity Best processing performance Normalized data occurs when attributes in the table depend only on the primary key. NORMALIZATION Slide 26 NON-NORMALIZED RELATION Slide 27 NORMALIZING THE DATABASE (PART A) Slide 28 NORMALIZING THE DATABASE (PART B) Slide 29 NORMALIZATION PRODUCES ORDER Slide 30 Data warehouses and Data Marts Organized by business dimension or subject Multidimensional Historical Use online analytical processing 5.4 DATA WAREHOUSING Slide 31 DATA WAREHOUSE FRAMEWORK & VIEWS Slide 32 RELATIONAL DATABASES Slide 33 MULTIDIMENSIONAL DATABASE Slide 34 EQUIVALENCE BETWEEN RELATIONAL AND MULTIDIMENSIONAL DATABASES Slide 35 Slide 36 Slide 37 End users can access data quickly and easily via Web browsers because they are located in one place. End users can conduct extensive analysis with data in ways that may not have been possible before. End users have a consolidated view of organizational data. BENEFITS OF DATA WAREHOUSING Slide 38 Knowledge management (KM) Knowledge Intellectual capital (or intellectual assets) 5.5 KNOWLEDGE MANAGEMENT Peter Eggermann/Age Fotostock America, Inc. Slide 39 KNOWLEDGE MANAGEMENT (CONTINUED) Tacit Knowledge (below the waterline) Explicit Knowledge (above the waterline) Ina Penning/Age Fotostock America, Inc. Slide 40 Knowledge management systems (KMSs) Best practices KNOWLEDGE MANAGEMENT (CONTINUED) Peter Eggermann/Age Fotostock America, Inc. Slide 41 Create knowledge Capture knowledge Refine knowledge Store knowledge Manage knowledge Disseminate knowledge KNOWLEDGE MANAGEMENT SYSTEM CYCLE Slide 42 Slide 43 CHAPTER CLOSING CASE The Problem The Solution The Results

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