Page 113 - Artificial Intellegence_v2.0_Class_11
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Let us now learn about two categories of data: Structured data and Unstructured data.
quantities
numbers information
What is Data?
facts graphs
observations measurement
Structured Data
Structured data is the type of data which we interact and work with every day. It has pre-defined data types and
formats. They are organized and are easy to analyze. It generally includes only textual data. For example, names,
dates, addresses, weather information, etc.
Unstructured Data
Unstructured data is the type of data which neither possesses any fixed datatype nor the size is fixed. It can not be
processed and analysed using traditional database methods. For example, text, audio, video, satellite imagery, etc.
Let us understand the difference between structured and unstructured data.
Structured Data Unstructured Data
Characteristics • Pre-defined data models • No pre-defined data model
• Usually text only • text, lmages, sound, video or other
• Easy to search formats
• Difficult to search
Found in • Relational databases • Applications
• Data warehouses • NoSQL databases
• Data warehouses
Generated by Humans or machines Humans or machines
Applications • Airline reservation systems • Word processing
• Inventory control • Presentation software
• ERP systems • Email clients
• Tools for viewing or editing media
Examples • Dates • Text files
• Phone numbers • Reports
• Credit card numbers • Email messages
• Customer names • Audio files
• Addresses • Video files
• Product names and numbers • Images
• Transaction information • Surveillance imagery
Introduction to AI 111

