Experiencing MIS 9th by m kronenke chapter 05

Chapter 5

Database Processing


“We Don’t Have a Way to Track the Data About the Videos.”

• Falcon Security stores sequentially numbered digital video files in separated directories for each client.
• Tracking down exact footage of when equipment stolen means searching hundreds of video files.
• Need database to track video files.
• MongoDB for tracking video files?

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Study Questions
Q1: What is the purpose of a database?
Q2: What is a database?
Q3: What is a database management system (DBMS)?
Q4: How do database applications make databases more useful?
Q5: How are data models used for database development?
Q6: How is a data model transformed into a database design?
Q7: How can Falcon Security benefit from a database system?
Q8: 2026?

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Q1: What Is the Purpose of a Database?

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•
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Organize and keep track of things.
Keep track of multiple themes.
General rule:

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–
•

Single theme - store in a spreadsheet.
Multiple themes - use a database.

What's a theme?

–

Ex: student grades, student emails, student office visits.

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A List of Student Grades Presented in a Spreadsheet – Single Theme

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Student Data Form for a Database Application

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Q2: What Is a Database?

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Hierarchy of Data Elements

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Components of a Database

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Example of
Relationships Among
Rows

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Sample of Access Metadata

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Ethics Guide: Querying Inequality?

• MaryAnn has a data mart.
• Business professional majored in HR, now "expert" in SQL.
• Uses SQL to do job faster and better.
• Examined data, saw possible discriminatory pattern.
• What would you do from categorical imperative and utilitarian perspectives?

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Ethics Guide: Querying Inequality? (cont’d)

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Queries could reveal all sorts of patterns and trends.

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•

Be sure what answers you want before starting query.

How strongly do you feel about social and personal responsibility, considering your needs and those of your
family?

•

How important is social responsibility posture of an employer to you?

– Is that something to add to your criteria for a job search?

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So What? Not What the Data Says . . .

• Subjective:
– Small, nonrandom sample.
– Called four different sales reps who can’t get any prospects to bite.
• Objective:
– Same month historical data, seasonal data comparisons.
• How to recognize and minimize bias?
– Use non-routine cognitive skills.

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Q3: What Is a Database Management System (DBMS)?

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•

Program to create, process, administer a database.
Licensed from vendors

– IBM, Microsoft, Oracle, and others.
 DB2, Access, SQL Server, Oracle Database.
•

Open source

–

MySQL: License-free for most applications.

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Processing the Database

DBMS Process Operations

1. Read
2. Insert
3. Modify
4. Delete data

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Processing the Database

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Structured Query Language - SQL (see-quell)

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International standard

Used by nearly all DBMS

SQL Example
INSERT INTO Student
([Student Number], [Student Name], HW1, HW2, MidTerm)
VALUES (1000, ‘Franklin, Benjamin’, 90, 95, 100);

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Adding a New Column to a Table (in Access 2013)

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Administering the Database

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Set up security system, user accounts, passwords, permissions, limits for processing.
Limit user permissions.
Back up database, improve performance of database applications, remove unwanted data.

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Summary of Database Administration Tasks

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Summary of Database Administration Tasks (cont'd)

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Q4: How Do Database Applications Make Databases More Useful?

View data; insert new, update existing, delete existing data.

Forms

Search using values provided by user.
Queries

Structured presentation of data using sorting, grouping, filtering, other
Reports

operations.
Provide security, data consistency, special purpose processing, e.g., handle

Application programs

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out-of-stock situations.

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Q4: How Do Database Applications Make Databases More Useful? (cont'd)

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Example of a Student Report

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Query Example

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