Disadvantages of File Processing
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Questions and Answers

What is one of the advantages of the database approach?

  • Increased cost of maintenance
  • Reduced data redundancy
  • Decreased application development productivity
  • Improved data consistency (correct)

    • What is a disadvantage of the file processing system?

  • Improved data quality
  • Need for explicit backup and recovery (correct)
  • Program-data independence
  • Improved data accessibility

    • What is an example of a data modeling and design tool?

  • Repository
  • Automated tool (correct)
  • Database Management System (DBMS)
  • User Interface

    • What is one of the costs of the database approach?

    <p>Conversion costs</p> Signup and view all the answers

    What is an example of a component of the database environment?

    <p>Application Programs</p> Signup and view all the answers

    What is a benefit of program-data independence?

    <p>Easier modification of application programs</p> Signup and view all the answers

    What is responsible for managing the database?

    <p>Database Management System (DBMS)</p> Signup and view all the answers

    What is included in the database environment?

    <p>Data modeling and design tools, repository, DBMS, database, application programs, user interface, data/database administrators, and system developers</p> Signup and view all the answers

    What is a major disadvantage of file processing systems?

    <p>Program-data dependence which requires metadata maintenance</p> Signup and view all the answers

    What is an advantage of the database approach?

    <p>Centralized control of data</p> Signup and view all the answers

    What is an entity in a data model?

    <p>A noun form describing a person, place, object, event, or concept</p> Signup and view all the answers

    What is a benefit of program-data independence?

    <p>Less program maintenance</p> Signup and view all the answers

    What type of relationships are common between entities in a data model?

    <p>One-to-many or many-to-many</p> Signup and view all the answers

    What is a disadvantage of file processing systems in terms of development?

    <p>Programmers must design their own file formats</p> Signup and view all the answers

    What is the purpose of a data model?

    <p>To capture the nature and relationship of data</p> Signup and view all the answers

    What is the primary function of an Enterprise System?

    <p>To provide a backbone for an organization</p> Signup and view all the answers

    What is a characteristic of relational databases?

    <p>Involving tables to represent entities</p> Signup and view all the answers

    What type of database is commonly used in Enterprise Systems?

    <p>Relational Database</p> Signup and view all the answers

    What is a characteristic of a Data Lake?

    <p>It does not involve relational databases</p> Signup and view all the answers

    What is the primary purpose of a Data Warehouse?

    <p>To integrate data from multiple data sources</p> Signup and view all the answers

    What is the name of the fictional furniture company used as a case study throughout the book?

    <p>Pine Valley Furniture</p> Signup and view all the answers

    What is the topic of Chapter 1 in the context of Pine Valley Furniture?

    <p>Database Evolution at Pine Valley Furniture Company</p> Signup and view all the answers

    What is the advantage of using a Data Warehouse?

    <p>It integrates data from multiple data sources</p> Signup and view all the answers

    What is the purpose of Figure 1-13 in the context of the book?

    <p>To show an example of an Executive Dashboard</p> Signup and view all the answers

    Study Notes

    Disadvantages of File Processing

    • Programs maintain metadata for each file they use, leading to program-data dependence
    • Duplication of data occurs, with different systems/programs having separate copies of the same data
    • There is limited data sharing, with no centralized control of data
    • Development times are lengthy, as programmers must design their own file formats
    • Program maintenance is excessive, with 80% of information systems budget spent on it

    The Database Approach

    • Data models capture the nature and relationship of data
    • Entities are composed of attributes and can be represented graphically
    • Relationships between entities can be one-to-many (1: N), many-to-many (M : N), or one-to-one (1:1)
    • Database technology involves tables (relations) representing entities and primary/foreign keys representing relationships

    Advantages of the Database Approach

    • Program-data independence is achieved
    • Planned data redundancy improves data consistency
    • Data sharing is improved, reducing data duplication
    • Application development productivity increases
    • Standards are enforced, improving data quality
    • Data accessibility and responsiveness are improved
    • Program maintenance is reduced
    • Decision support is improved

    Costs and Risks of the Database Approach

    • New, specialized personnel may be needed
    • Installation and management cost and complexity may arise
    • Conversion costs can be high
    • Backup and recovery procedures must be implemented
    • Organizational conflict may occur

    Components of the Database Environment

    • Data modeling and design tools automate database and application design
    • Repository stores metadata centrally
    • Database Management System (DBMS) manages the database
    • Database stores the data
    • Application programs use the data
    • User Interface provides a user-friendly interface
    • Data/Database Administrators maintain the database
    • System Developers design databases and software
    • End Users utilize the applications and databases

    Types of Enterprise Applications

    • Enterprise Systems involve relational databases and are the backbone of an organization
    • Data Warehouses integrate data from multiple sources and maintain historical data
    • Data Lakes are large, integrated repositories that do not follow a predefined schema

    Pine Valley Furniture Company

    • A fictional furniture company used as a case study throughout the book
    • Topics covered include database evolution, project planning, analyzing database requirements, designing the database, using the database, administering the database, and the future of databases at PVF

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    Description

    This quiz covers the drawbacks of file processing, including program-data dependence, duplication of data, limited data sharing, lengthy development times, and excessive program maintenance.

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