Management Information Systems Chapter 6
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Questions and Answers

What is a primary function of text mining?

  • Mining database information
  • Extracting key elements from large unstructured text data sets (correct)
  • Analyzing web structures
  • Extracting key elements from structured data sets
  • Web mining includes web structure mining but does not include web usage mining.

    False (B)

    Name one advantage of using the web for database access.

    Ease of use of browser software

    Sentiment analysis software is a tool used in __________.

    <p>text mining</p> Signup and view all the answers

    Match the terms with their descriptions:

    <p>Web content mining = Analyzing data from web pages Web structure mining = Discovering relationships between web elements Web usage mining = Understanding user behavior on websites Text mining = Extracting information from unstructured text</p> Signup and view all the answers

    Which of the following is NOT a problem associated with a traditional file environment?

    <p>Instant data access (A)</p> Signup and view all the answers

    Data governance is not essential for managing a firm's data resources.

    <p>False (B)</p> Signup and view all the answers

    What is a database?

    <p>A group of related files.</p> Signup and view all the answers

    A ________ is a group of records of the same type.

    <p>file</p> Signup and view all the answers

    What is one major capability of a database management system (DBMS)?

    <p>Program-data independence (D)</p> Signup and view all the answers

    Lack of flexibility is a benefit of the traditional file environment.

    <p>False (B)</p> Signup and view all the answers

    What does the term 'entity' refer to in the context of databases?

    <p>A person, place, or thing on which information is stored.</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>File = Group of records of the same type Record = Group of related fields Field = Group of characters as word(s) or number(s) Attribute = Each characteristic describing an entity</p> Signup and view all the answers

    What is the primary purpose of a Database Management System (DBMS)?

    <p>To provide an interface between applications and physical data files (B)</p> Signup and view all the answers

    A primary key is used to uniquely identify records in a table.

    <p>True (A)</p> Signup and view all the answers

    What is normalization in the context of database design?

    <p>Streamlining complex data groupings to minimize redundancy.</p> Signup and view all the answers

    In a relational database, the structure is often represented as a __________ containing rows and columns.

    <p>table</p> Signup and view all the answers

    Match the following database terminology with their definitions:

    <p>Primary Key = Field used to uniquely identify each record Foreign Key = Primary key used in another table Data Dictionary = Metadata about the database Referential Integrity = Ensures consistency of relationships between tables</p> Signup and view all the answers

    What is a primary challenge associated with big data?

    <p>Volumes too great for typical DBMS (C)</p> Signup and view all the answers

    Which of the following does a DBMS NOT solve?

    <p>Creates data independently of data files (A)</p> Signup and view all the answers

    An entity-relationship diagram represents the physical structure of the database.

    <p>False (B)</p> Signup and view all the answers

    A data warehouse allows data to be altered.

    <p>False (B)</p> Signup and view all the answers

    What is Hadoop primarily used for?

    <p>Distributed parallel processing of big data.</p> Signup and view all the answers

    What language is commonly used for querying and reporting in databases?

    <p>Structured Query Language (SQL)</p> Signup and view all the answers

    What is a primary benefit of in-memory computing?

    <p>Improves processing speed by reducing retrieval delays (D)</p> Signup and view all the answers

    Analytic platforms only utilize relational tools for data processing.

    <p>False (B)</p> Signup and view all the answers

    Hadoop includes the __________ for data storage.

    <p>Hadoop Distributed File System (HDFS)</p> Signup and view all the answers

    Match the BI infrastructure tools with their descriptions:

    <p>Data mart = Subset of data warehouse Hadoop = Distributed processing framework for big data Data warehouse = Stores current and historical data In-memory computing = Fast data processing using RAM</p> Signup and view all the answers

    What does OLAP stand for?

    <p>Online Analytical Processing</p> Signup and view all the answers

    The objective of data mining is to find hidden _______ and relationships in datasets.

    <p>patterns</p> Signup and view all the answers

    Which of the following is NOT a key service offered by Hadoop?

    <p>SQL Database (D)</p> Signup and view all the answers

    Data marts generally focus on multiple subjects within a business.

    <p>False (B)</p> Signup and view all the answers

    Match the following types of analysis with their descriptions:

    <p>OLAP = Supports multidimensional data analysis Data mining = Finds hidden patterns in datasets Text mining = Extracts insights from text data Web mining = Analyzes data from web sources</p> Signup and view all the answers

    What type of information can be inferred from data mining?

    <p>Customer buying patterns (B)</p> Signup and view all the answers

    Name one advantage of using a data warehouse.

    <p>Provides analysis and reporting tools.</p> Signup and view all the answers

    Multidimensional data analysis looks at single aspect dimensions of information.

    <p>False (B)</p> Signup and view all the answers

    Name one type of information obtainable from data mining.

    <p>Associations, Sequences, Classification, Clustering, Forecasting</p> Signup and view all the answers

    Flashcards

    Database

    A collection of related files that store data.

    File

    A group of records of the same type, like all customer records.

    Record

    A set of related fields about one entity, like all details about one customer.

    Field

    A single piece of information or attribute of an entity, such as a name or a number.

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    Entity

    An object or concept about which data is stored, such as customers, products, etc.

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    Attribute

    A characteristic describing an entity, like a customer's age or address.

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    Data Redundancy

    The unnecessary duplication of data across files, leading to wasted space.

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    Data Inconsistency

    Discrepancies in data arising from different files; leads to unreliable information.

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    Big Data

    Massive sets of unstructured/semi-structured data from sources like web traffic and social media.

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    Volumes of Data

    Refers to data sizes like petabytes or exabytes which exceed typical DBMS capabilities.

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    Data Warehouse

    A central repository for current and historical data from various operational systems, standardized for enterprise use.

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    Data Mart

    A subset of a data warehouse that focuses on a specific subject or business line.

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    Hadoop

    An open-source framework for storing and processing big data using distributed systems.

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    HDFS (Hadoop Distributed File System)

    The storage component of Hadoop that manages data storage across a cluster of computers.

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    MapReduce

    A programming model in Hadoop that processes large data sets by breaking them into smaller clusters.

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    In-memory Computing

    A technology that stores data in the main memory (RAM) for quicker data access and processing.

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    Text Mining

    Extracting key elements from large unstructured text data sets.

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    Web Mining

    Discovery and analysis of patterns and information from the web.

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    Web Content Mining

    Extracting useful information from web content like text and images.

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    Web Structure Mining

    Analyzing the structure of websites to understand relationships.

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    Web Usage Mining

    Analyzing user interactions on websites to identify patterns.

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    Analytic platforms

    High-speed platforms utilizing relational and non-relational tools for analyzing large datasets.

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    Multidimensional data analysis (OLAP)

    Supports viewing data from multiple aspects like product, pricing, and time.

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    Data mining

    The process of discovering hidden patterns and relationships in large datasets.

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    Associations (Data mining)

    Identifies relationships between variables in datasets, like customer behaviors.

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    Classifications (Data mining)

    Categorizes data into predefined classes based on attributes.

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    Clustering (Data mining)

    Groups similar items together in datasets without predefined labels.

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    Forecasting (Data mining)

    Uses patterns from historical data to predict future outcomes.

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    DBMS

    Software that interfaces between applications and physical data files, managing data organization.

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    Relational DBMS

    Stores data in two-dimensional tables with rows and columns for entities and attributes.

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    Primary Key

    A unique identifier for each record in a table.

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    Foreign Key

    A field in one table that links to the primary key in another table.

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    Normalization

    The process of organizing data to minimize redundancy and avoid awkward relationships.

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    Referential Integrity

    Rules ensuring relationships between tables in a database remain consistent.

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    SQL (Structured Query Language)

    A language used for querying and manipulating data in a DBMS.

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    Study Notes

    Management Information Systems: Chapter 6

    • Management Information Systems: Managing the Digital Firm, Seventeenth Edition, Global Edition, by Kenneth C. Laudon and Jane P. Laudon

    • Chapter 6 covers Foundations of Business Intelligence: Databases and Information Management.

    • Learning Objectives include: the challenges of managing data resources in a traditional file environment, the capabilities of Database Management Systems (DBMS), tools and technologies for accessing information from databases to improve business performance and decision-making, and the importance of data governance and data quality assurance.

    • A traditional file environment suffers from issues such as data redundancy, inconsistency, program-data dependence, poor flexibility, poor security, and lack of data sharing and availability.

    • Database Management Systems (DBMS) serve multiple applications by centralizing data and controlling redundancy.

    • DBMS functions include: interfaces between applications and physical data files, separation of logical and physical views of data, solving the problems of traditional file environments, and controlling redundancy/inconsistency, uncoupling programs and data, enabling organizations to centrally manage data and data security.

    • Data is organized in hierarchical structures with a database at the top, followed by files, records, fields, bytes, and bits.

    • Relational DBMS is a powerful tool that represents data as tables, with rows (records) and columns (fields).

    • Key fields uniquely identify records, primary keys are in tables and point to records, while foreign keys link tables.

    • Capabilities of DBMS include data definition, data dictionaries, querying and reporting (using Structured Query Language (SQL), and various report generation tools, such as Microsoft Access.

    • Designing databases requires conceptual design vs. physical design, normalization to reduce redundancy, and referential integrity.

    • Big data consists of massive amounts of unstructured/semi-structured data from web traffic, social media, sensors, etc., and requires new technologies for management and analysis.

    • Business intelligence infrastructure includes tools for obtaining information from multiple systems and big data, such as data warehouses, data marts, Hadoop, in-memory computing, and analytical platforms.

    • Data warehouses store current and historical data, while data marts are subsets of data warehouses focused on single subjects or business lines.

    • Hadoop enables big data processing across inexpensive computers, using Hadoop Distributed File System (HDFS), MapReduce, and NoSQL databases like Hbase.

    • In-memory computing uses computer memory (RAM) for data storage, reducing processing delays. Analytical platforms use both relational and non-relational tools optimized for large datasets.

    • Contemporary BI infrastructure consists of various data sources, including operational data, historical data, IoT data, and external data. Data is transformed and loaded into a Data Warehouse, providing data for Data Marts, Casual Users, and Power Users. Data mining tools can be used to get important insights such as customer buying behavior, predicting future events, etc.

    • Online Analytical Processing (OLAP) enables rapid, online answers needed for ad-hoc queries, typically using multidimensional analysis. Data mining finds patterns and relationships in data, with types such as associations, sequencing, classification, clustering, and forecasting. Text mining extracts key elements from large text sets, while web mining discovers patterns from web content, structure, and usage.

    • Databases and the web allow organizations to make internal databases accessible to customers and partners, with advantages including ease of use, minimal changes to database systems and low cost.

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    Description

    This quiz covers Chapter 6 of 'Management Information Systems: Managing the Digital Firm'. It focuses on foundations of business intelligence, particularly databases and information management. Explore key concepts such as data challenges, the role of Database Management Systems, and the significance of data governance and quality assurance.

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