Oracle databases are powerful systems used to store, manage, and retrieve data efficiently. They are designed to handle large volumes of information and support multiple users simultaneously. This makes them popular in various industries, including finance, healthcare, and retail, where data integrity and security are crucial. One of the key features of Oracle databases is their ability to support complex queries and transactions. They use a structured query language (SQL) for data manipulation, allowing users to easily access and analyze information. Additionally, Oracle offers tools for backup, recovery, and performance tuning, ensuring that databases run smoothly and securely.