database

• A single table database is a structured collection of data that allows for the organization and extraction of specific information
• Data in a single table database can include text, numbers, pictures, or any information that can be stored in a computer
• Example: A single table database for a vet surgery includes information such as pet names, photos, breed, age, gender, owner, and contact phone number
• Relational databases link two or more tables together, but this concept is not covered in the IGCSE syllabus
• Databases are useful for storing and organizing large amounts of information in one place, such as student registrations in a school or items sold in a shop
• Data in a database is collected through forms on a computer, ensuring consistency and avoiding duplication of information
• Entities: Single elements in the database table

  Attributes: Further details about each entity, such as text or numbers

  Fields: Columns in the database table

  Records: Single rows containing all information about an entity

  Table: All fields and records together

  Primary Key: Unique identifier for each record
• Validation checks that the correct type of data has been entered, while verification checks that the data is accurate
• Validation examples: Range check, length check, type check, presence check

  Verification examples: Checking for correct data entry by comparing multiple entries
• Example activity: Creating a database for doctor's appointments with fields like patient ID, name, appointment time, duration, admission date, and bed number
• Single table databases in IGCSE Computer Science focus on Fields, Records, and Validation
• A single table database is a structured collection of data that allows for the organization and extraction of specific information
• Data in a single table database can include text, numbers, pictures, and any information that can be stored in a computer
• In single table databases, each row represents a record containing specific information about an entity, such as names, photos, breed, age, gender, owner, and contact details
• Relational databases, where two or more tables are linked, are not covered in IGCSE but are part of A Level and IB studies
• Databases are useful for storing and managing information efficiently, such as records of students in a school, items sold in a shop, or patients in a hospital
• Key components of a database include entities (single elements), attributes (details about entities), fields (columns), records (rows), and the table (all information together)
• Primary key in a database is a unique identifier for each record, ensuring no duplication of information
• Validation checks ensure the correct type of data is entered, while verification checks that the data entered is accurate
• Validation examples include range checks, length checks, type checks, presence checks, and format checking
• Verification involves comparing data entered by two individuals to ensure accuracy
• A single table database is a structured collection of data that allows for the organization and extraction of specific information
• Data in a single table database can include text, numbers, pictures, or any information that can be stored in a computer
• In a single table database for a vet surgery, information such as pet names, photos, breed, age, gender, owner, and contact phone number can be stored
• Relational databases link two or more tables together, but this concept is not covered in the IGCSE syllabus
• Databases are useful for storing and organizing information efficiently, eliminating the need to carry around physical books
• Data in a database is collected through forms on a computer, ensuring consistency and allowing for easy access and management
• Databases can be used in various fields like hospitals, schools, shops, libraries, and event management to store information about patients, students, products, books, and events
• Key components of a database include entities (single elements), attributes (details about entities), fields (columns), records (rows), and tables (all information together)
• Primary key in a database is a unique identifier for each record, ensuring no duplication of information
• Validation checks ensure the correct type of data has been entered, while verification checks that the data entered is accurate and correct
• Examples of validation checks include range checks, length checks, type checks, presence checks, and format checking
• Validation and verification are essential to maintain data integrity and accuracy in a database