Databases

 

A database is a structured collection of data that is organized and stored in a way that allows for efficient retrieval, management, and updating of information. It serves as a central repository for storing and managing data, making it easier to organize, access, and manipulate information. Databases are used in various applications and industries to store data such as customer information, inventory records, financial transactions, and more.

Key characteristics of a database include:

Structured Format: Data in a database is organized into tables with predefined columns and data types, ensuring a structured format.

Data Integrity: Databases enforce rules to maintain data integrity, ensuring that the stored information is accurate and consistent.

Query Language: Databases use a query language (like SQL - Structured Query Language) to interact with and retrieve data from the database.

Concurrency Control: Databases manage multiple simultaneous accesses to the data, ensuring that transactions are processed in a controlled manner to maintain consistency.

Indexes: Indexes are used to optimize data retrieval, making queries more efficient by providing a quick lookup of specific data.