tutorialspoint - DBMS

Database Management System or DBMS in short refers to the technology of storing and retrieving users’ data with utmost efficiency along with appropriate security measures. DBMS allows its users to create their own databases as per their requirement. These databases are highly configurable and offer a bunch of options.
This tutorial explains the basics of DBMS such as its architecture, data models, data schemas, data independence, E-R model, relation model, relational database design, and storage and file structure. In addition, it covers a few advanced topics such as indexing and hashing, transaction and concurrency, and backup and recovery.”

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