1 / 29

Information

Information. Information is everywhere in an organization Employees must be able to obtain and analyze the many different levels, formats, and granularities of organizational information to make decisions

tab
Download Presentation

Information

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Information • Information is everywhere in an organization • Employees must be able to obtain and analyze the many different levels, formats, and granularities of organizational information to make decisions • Successfully collecting, compiling, sorting, and analyzing information can provide tremendous insight into how an organization is performing

  2. Databases • Database • Collection of related data that can be stored in a central location or in multiple locations • Usually a group of files • File • Group of related records • All files are integrated • Record • Group of related fields

  3. Databases

  4. Data-Driven Web Sites • Data-driven Web site • Interface to a database • Retrieves data and allows users to enter data • Improves access to information • Useful for: • E-commerce sites that need frequent updates • News sites that need regular updating of content • Forums and discussion groups • Subscription services, such as newsletters

  5. Data-Driven Websites

  6. Data-Driven Business Intelligence

  7. BI in Action: Law Enforcement • Business intelligence (BI) • Used in law enforcement as well as in the business world • www.crimemapping.com • Richmond, Virginia • System generates BI reports that help pinpoint crime patterns • Allocate manpower to days and locations where crime likely to occur

  8. DATA WAREHOUSE • Data warehouse – a logical collection of information – gathered from many different operational databases – that supports business analysis activities and decision-making tasks • The primary purpose of a data warehouse is to aggregate information throughout an organization into a single repository for decision-making purposes

  9. Data Warehouse • Data warehouse supports different types of analysis • Generates reports for decision making • Online analytical processing (OLAP) • Generates business intelligence • Uses multiple sources of information and provides multidimensional analysis • Hypercube • Drill down and drill up

  10. Multidimensional Analysis • Cube – common term for the representation of multidimensional information

  11. The Value of Quality Information • Business decisions are only as good as the quality of the information used to make the decisions • You never want to find yourself using technology to help you make a bad decision faster

  12. Information Cleansing or Scrubbing • Accurate and complete information

  13. Data Mining and Business Intelligence • Data mining – the process of analyzing data to extract information not offered by the raw data alone • Data-mining analysis • Discover patterns and relationships • Cross-reference segments of an organization’s operations for comparison purposes • Analyze large amounts of historical data quickly • To perform data mining users need data-mining tools • Data-mining tools helps users uncover BI

  14. Data-mining • Data-mining analysis • Discover patterns and relationships • Reports • Cross-reference segments of an organization’s operations for comparison purposes • Find patterns and trends that can’t be found with databases • Analyze large amounts of historical data quickly

  15. Relational Database Management Systems • A database management system (DBMS) is a software program that lets you create databases and then manipulate data in them • In a relational database management system, data is organized as a collection of tables New Perspectives on Microsoft Access 2010

  16. Data Manipulation • Add, delete, modify, and retrieve records from a database • Query language • Structured Query Language (SQL) • Standard fourth-generation query language used by many DBMS packages • SELECT statement • Query by example (QBE) • Construct statement of query forms • Graphical interface

  17. Organizing Data • Your first step in organizing data is to identify the individual fields • The specific value, or content, of a field is called the field value • A set of field values is called a record • Next, you group related fields together into tables New Perspectives on Microsoft Access 2010

  18. Exhibit 3.1 Data Hierarchy

  19. Databases and Relationships • A collection of related tables is called a database, or a relational database • You connect the records in the separate tables through a common field • A primary key is a field, or a collection of fields, whose values uniquely identify each record in a table • When you include the primary key from one table as a field in a second table to form a relationship between the two tables, it is called a foreign key in the second table New Perspectives on Microsoft Access 2010

  20. Databases and Relationships New Perspectives on Microsoft Access 2010

  21. Viewing Objects in the Navigation Pane New Perspectives on Microsoft Access 2010

  22. Entering Records New Perspectives on Microsoft Access 2010

  23. Creating a Simple Query • A query is a question you ask about the data stored in a database • The Simple Query Wizard allows you to select records and fields quickly New Perspectives on Microsoft Access 2010

  24. Creating a Simple Form • A form is an object you use to enter, edit, and view records in a database • You can design your own forms, use the Form Wizard, or use the Form tool to create a simple form quickly and easily New Perspectives on Microsoft Access 2010

  25. Creating a Simple Form New Perspectives on Microsoft Access 2010

  26. Creating a Simple Report • A report is a formatted printout (or screen display) of the contents of one or more tables in a database • The Report tool places all the fields from a selected table or query New Perspectives on Microsoft Access 2010

  27. Creating a Simple Report New Perspectives on Microsoft Access 2010

  28. Compacting and Repairing a Database • Compacting a database rearranges the data and objects in a database to decrease its file size New Perspectives on Microsoft Access 2010

  29. Backing Up and Restoring a Database • Backing up a database is the process of making a copy of the database file to protect your database against loss or damage • The Back Up Database command enables you to back up your database file from within the Access program, while you are working on your database New Perspectives on Microsoft Access 2010

More Related