Lesson 1: Introduction to Information Systems
What is Data?
● Raw facts or unprocessed elements collected from observations or measurements
● Can be numbers, text, symbols, images, sounds, etc.
● Has no inherent meaning until processed or contextualized
Types of Data
● Alphanumeric Data: letters, numbers, and special characters
● Audio Data: sound recordings, voice clips
● Image Data: photographs, drawings, scanned images
● Video Data: moving pictures with or without sound
What is Information?
● Data that has been organized, processed, or structured to convey meaning
● Adds context so users can understand and make decisions
● Examples:
○ Student scores (data) → final grade (information)
○ Purchase history (data) → personalized product recommendations
(information)
Difference between Data and Information
● Data: raw, unprocessed facts; by itself doesn’t answer questions
● Information: processed data that’s meaningful and useful
● Key distinction: data needs transformation (sorting, calculating, contextualizing)
before it becomes information
, Process of Transforming Data into Information
● Gather raw data from sources (measurements, observations, transactions)
● Clean and organize the data (remove errors, sort, classify)
● Analyze or calculate to extract patterns and insights
● Contextualize results to give them meaning (add labels, units, comparisons)
● Present the processed results as information for decision-making
Characteristics of Quality Information
● Accuracy: Information is correct and free from error
● Completeness: Contains all necessary data; no missing pieces
● Reliability: Comes from trustworthy sources and methods
● Relevance: Directly related to the decision or task at hand
● Timeliness: Available when needed and up-to-date
What is an Information System?
● A coordinated set of components that collects, stores, processes, and
disseminates data and information
● Designed for a specific purpose, such as supporting business operations or
decision-making
Basic Process of an Information System
● Input: Accept data or instructions (e.g., typing on a keyboard, scanning a barcode)
● Processing: Transform input into meaningful form (calculations, sorting, analysis)
● Storage: Keep data/information for future use (files, databases, cloud)
● Output: Deliver information in usable formats (screens, printed reports)
● Feedback: Collect responses to improve system performance (user ratings, error
logs)
What is Data?
● Raw facts or unprocessed elements collected from observations or measurements
● Can be numbers, text, symbols, images, sounds, etc.
● Has no inherent meaning until processed or contextualized
Types of Data
● Alphanumeric Data: letters, numbers, and special characters
● Audio Data: sound recordings, voice clips
● Image Data: photographs, drawings, scanned images
● Video Data: moving pictures with or without sound
What is Information?
● Data that has been organized, processed, or structured to convey meaning
● Adds context so users can understand and make decisions
● Examples:
○ Student scores (data) → final grade (information)
○ Purchase history (data) → personalized product recommendations
(information)
Difference between Data and Information
● Data: raw, unprocessed facts; by itself doesn’t answer questions
● Information: processed data that’s meaningful and useful
● Key distinction: data needs transformation (sorting, calculating, contextualizing)
before it becomes information
, Process of Transforming Data into Information
● Gather raw data from sources (measurements, observations, transactions)
● Clean and organize the data (remove errors, sort, classify)
● Analyze or calculate to extract patterns and insights
● Contextualize results to give them meaning (add labels, units, comparisons)
● Present the processed results as information for decision-making
Characteristics of Quality Information
● Accuracy: Information is correct and free from error
● Completeness: Contains all necessary data; no missing pieces
● Reliability: Comes from trustworthy sources and methods
● Relevance: Directly related to the decision or task at hand
● Timeliness: Available when needed and up-to-date
What is an Information System?
● A coordinated set of components that collects, stores, processes, and
disseminates data and information
● Designed for a specific purpose, such as supporting business operations or
decision-making
Basic Process of an Information System
● Input: Accept data or instructions (e.g., typing on a keyboard, scanning a barcode)
● Processing: Transform input into meaningful form (calculations, sorting, analysis)
● Storage: Keep data/information for future use (files, databases, cloud)
● Output: Deliver information in usable formats (screens, printed reports)
● Feedback: Collect responses to improve system performance (user ratings, error
logs)
