Summary of Computer Glossary in MySQL

This summary provides an overview of key terms and concepts related to MySQL and databases, as outlined in the Tutorialspoint glossary.

Key Concepts

1. Database
   • Definition: A structured collection of data stored electronically.
   • Example: A library database containing books, authors, and patrons.
2. Table
   • Definition: A set of data organized in rows and columns within a database.
   • Example: A customers table with columns for customer_id, name, and email.
3. Row
   • Definition: A single record in a table.
   • Example: A row in the customers table representing one specific customer.
4. Column
   • Definition: A vertical entity in a table that contains all values for a specific field.
   • Example: The name column in the customers table.
5. Primary Key
   • Definition: A unique identifier for each row in a table.
   • Example: The customer_id field that uniquely identifies each customer.
6. Foreign Key
   • Definition: A field in one table that links to the primary key of another table.
   • Example: In an orders table, a customer_id foreign key that links to the customers table.
7. SQL (Structured Query Language)
   • Definition: The standard language used to manage and manipulate databases.
   • Example: SELECT * FROM customers; retrieves all records from the customers table.
8. Query
   • Definition: A request for data or information from a database.
   • Example: Searching for all customers whose names start with "A".
9. Index
   • Definition: A data structure that improves the speed of data retrieval operations.
   • Example: An index on the email column of the customers table for faster search queries.
10. Normalization
    • Definition: The process of organizing data to reduce redundancy and improve data integrity.
    • Example: Splitting a products table into separate products and categories tables.

Conclusion

Understanding these basic terms and concepts is essential for working effectively with MySQL databases. By familiarizing yourself with these definitions, you can better navigate database-related tasks and queries.