What is Database? Video Lecture | Lucent for GK - UPSC

Ans. A database is a structured collection of data that is organized and stored in a computer system. It is designed to efficiently manage and retrieve large amounts of information.

Ans. There are several types of databases, including relational databases, object-oriented databases, hierarchical databases, network databases, and NoSQL databases. Each type has its own characteristics and is suitable for different types of data and applications.

Ans. A database works by storing data in tables, which are composed of rows and columns. The tables are related to each other through keys, such as primary keys and foreign keys, which establish relationships between the data. Users can query the database using SQL (Structured Query Language) to retrieve and manipulate the data.

Ans. A database management system (DBMS) is software that helps in managing and controlling a database. It provides tools and utilities to create, store, modify, and retrieve data from the database. The DBMS also ensures the security and integrity of the data and provides functionalities for backup and recovery.

Ans. Using a database offers several advantages, such as: - Data consistency: Databases ensure that data is consistent and accurate by enforcing integrity constraints. - Data sharing: Databases allow multiple users to access and share data simultaneously, promoting collaboration and efficiency. - Data security: Databases provide mechanisms to control access to data, protecting sensitive information from unauthorized access. - Data scalability: Databases can handle large amounts of data and can be scaled up or down to meet changing business needs. - Data integrity: Databases ensure that data remains intact and consistent over time through techniques like backup and recovery.