Capturing, Selecting, Managing & Exchanging Data (OCR A-Level Computer Science): Flashcards
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Practise the cards
15 cards from this deck
OCR (Optical Character Recognition) function
OCR (Optical Character Recognition) function
Converts scanned text images into editable digital text
OCR limitation with document quality
OCR limitation with document quality
Struggles with poor-quality images or handwriting
OMR (Optical Mark Recognition) purpose
OMR (Optical Mark Recognition) purpose
Reads marks made on forms like multiple-choice answer sheets
Sensors in IoT applications
Sensors in IoT applications
Automatically gather real-time data from physical environment
Data mining definition
Data mining definition
Extracting patterns & insights from large datasets
QBE (Query By Example) approach
QBE (Query By Example) approach
User-friendly visual approach to building database queries
SQL (Structured Query Language) use
SQL (Structured Query Language) use
Programming language to manage & query relational databases
Indexing purpose in databases
Indexing purpose in databases
Optimisation technique that speeds up searches in tables
Benefit of indexing
Benefit of indexing
Faster querying & retrieval, especially in large datasets
Drawback of indexing
Drawback of indexing
Increases storage & slows data modifications (inserts/updates)
CSV format characteristics
CSV format characteristics
Widely supported & easy to parse but lacks data validation
JSON format characteristics
JSON format characteristics
Lightweight, human-readable format for key-value pairs
JSON common usage
JSON common usage
Commonly used in web APIs for data exchange
XML typical use case
XML typical use case
Exchanging data in complex, hierarchical structures
API (Application Programming Interface) purpose
API (Application Programming Interface) purpose
Allows different software systems to communicate