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Questions and Answers
What is the primary function of a database?
What is the primary function of a database?
What is a characteristic of a database?
What is a characteristic of a database?
What is a table in a database?
What is a table in a database?
What is a record in a database?
What is a record in a database?
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What is a primary key in a database?
What is a primary key in a database?
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What is an example of an attribute in a database?
What is an example of an attribute in a database?
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Study Notes
What is a Database?
- A database is a collection of organized data that makes it easy for a computer program to search and store information.
- It can be thought of as an electronic filing system.
Characteristics of a Database
- A database is a persistent store of data, meaning it will exist even when the power is off or the system has a failure.
- Data is organized into a table structure.
Database Structure
- A table is a collection of records, with each record stored as a row.
- Each record is a collection of information called attributes or fields.
- Fields are elements of a database record in which one piece of information is stored (e.g., 'name' in an electronic address book).
Primary Key
- A primary key is a unique identifying value for records in a database.
- Each record must be uniquely identified in order to access individual record details.
- Examples of primary keys include Customer ID in a shop database or patient ID in a doctor's surgery.
Database Usage
- Databases are used in many different settings, for different purposes.
- Examples of database usage include social networks storing information about users and libraries keeping track of book availability.
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Description
Learn about databases, their role in digital technology, and how they are used in different settings to store and manage information. Understand how databases work and their applications.
