Introduction to Data Analytics

Data Analytics Overview

• Systematic approach to transforming raw data into insightful information.
• Utilizes various technologies and tools for data collection, cleaning, transformation, and modeling.
• Serves as a support system for enhanced decision-making.
• Essential for business growth and performance optimization.

Importance of Data Analytics

• Assists organizations in utilizing data for strategic advantages.
• Enables better decision-making through actionable insights.
• Drives efficiency and effectiveness within various industries.

IoT Analytics

• Involves collecting, processing, and analyzing data from IoT devices.
• Generates significant amounts of data as more devices connect to the internet.
• Provides insights that can transform big data into useful information.
• Constitutes heterogeneous data streams that require integration for analysis.

Roles of Data Analysts in IoT

• Setting and determining organizational goals.
• Conducting data mining to extract valuable information.
• Ensuring data quality through rigorous data cleaning processes.
• Performing detailed data analysis to recognize patterns and trends.
• Generating reports to communicate findings.
• Maintaining data integrity and system functionalities.

Importance of IoT Data Analytics

• Delivers actionable and practical insights.
• Facilitates real-time decision-making capabilities.
• Enhances predictive maintenance processes.
• Promotes cost-effective analysis of operations.
• Improves overall customer experiences.
• Aids in security management and anomaly detection.
• Supports scalability and flexibility in data handling.
• Assists organizations in meeting regulatory compliance.
• Fuels innovation and development of new products.

IoT Analytics Use Cases

• Walmart utilizes IoT analytics to monitor customer arrival rates and checkout timings for efficient queue management.

Data Flow Types

• Simplex: Communication flows in one direction only.
• Half-Duplex: Devices can both send and receive, but not simultaneously; only one can transmit at a time.
• Full-Duplex: Allows simultaneous transmission and reception between devices, maximizing link capacity.

Basic Network Terminologies

• Network: Collection of interconnected devices.
• Node: Individual device within a network.
• Protocol: Set of rules for data communication.
• Topology: Layout or organizational arrangement of a network.
• IP Address: Unique identifier assigned to devices for network communication.
• DNS: Translates domain names into IP addresses for easier navigation.
• Firewall: Security system protecting networks from unauthorized access.

Network Criteria

• Performance: Measured by transit and response times, affected by user load and equipment efficiency.
• Reliability: Frequency and recovery time from failures, assesses robustness during crises.
• Security: Protects against unauthorized access and data breaches.

Reasons for Using Computer Networks

• Resource sharing among connected devices.
• Enhanced communication capabilities.
• Access to a broader range of information.
• Improved security features protecting shared resources.
• Remote management and cloud computing capabilities.
• Streamlined competitive advantages through networking.

Connection Types

• Point-to-Point: Dedicated link between two devices utilizing the full capacity for data transmission.
• Multipoint: Multiple devices share a single link either through spatial sharing (simultaneously) or time-sharing (turn-taking).

Categories of Networks

• LAN (Local Area Network): Limited geographical area, privately owned, shared resources across short distances.
• MAN (Metropolitan Area Network): Covers an entire city, typically owned and operated by a private company.
• WAN (Wide Area Network): Covers large geographic areas, including countries or continents, often used for company-wide networking.

Internet vs. Intranet

• Internet: Global system of interconnected networks using TCP/IP to link devices worldwide. Encompasses a vast range of information resources and services.
• Intranet: Private network for organizations accessible only to staff, facilitating internal communication and resource sharing. Often built using LAN and WAN technologies.