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HomeHomework Helpcomputer-scienceRelational Database Model

Relational Database Model

The relational database model is a framework for storing data in tables, where each table consists of rows and columns. It facilitates the organization, manipulation, and retrieval of data through relationships among tables.

beginner
3 hours
Computer Science
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Overview

The relational database model is a foundational concept in data management, allowing for the organization of data into structured tables. Each table consists of rows and columns, where rows represent individual records and columns represent attributes of those records. This model supports relationsh...

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Key Terms

Table
A collection of related data entries consisting of rows and columns.

Example: A 'Customers' table with columns for 'ID', 'Name', and 'Email'.

Primary Key
A unique identifier for a record in a table.

Example: The 'ID' column in a 'Users' table.

Foreign Key
A field in one table that uniquely identifies a row of another table.

Example: The 'CustomerID' in an 'Orders' table linking to 'Customers'.

Normalization
The process of organizing data to minimize redundancy.

Example: Splitting a 'Products' table into 'Products' and 'Categories' tables.

SQL
Structured Query Language used for managing and manipulating databases.

Example: Using 'SELECT * FROM Customers;' to retrieve all customer records.

Data Integrity
The accuracy and consistency of data over its lifecycle.

Example: Ensuring no duplicate entries in a 'Users' table.

Related Topics

Database Management Systems
Study of software that interacts with databases to manage data.
intermediate
SQL Advanced Techniques
Exploration of complex SQL queries and database optimization.
advanced
NoSQL Databases
Understanding non-relational databases and their use cases.
intermediate

Key Concepts

TablesPrimary KeysForeign KeysNormalization