Databases are the most essential thing for running any organization. For a company, having a data warehouse can help to make sure its employees have access to vital information in real-time. That way, they won't need to wait on someone from IT. A database is basically just a collection of data organized in tables with rows and columns. A database management system (DBMS) is a computer application that provides a user interface to manage, maintain, and organize data. The first database management system was developed in 1969 by Charles Bachman, of Systems Development Corporation. It is designed to provide centralized, systematic control over an organization’s data. The first commercial database management system was produced in 1970 by Cullinet Computer Corporation. DBMS is used in a variety of different industries. Some examples are retail, banking, and healthcare. They are used to store and retrieve information which is important for these organizations. Database Management Systems are used for data storage and retrieval. A database is a collection of information, from tables to graphs, that is organized so that it can be searched and managed. Database Management Systems can have various other functions as well. They might contain search algorithms to index the data for fast searching, mechanisms for security and backup copies, or even support for custom mathematical operations on the data. Read on to learn more about DBMS, their advantages, use, and more. Read on to get DBMS notes, insights into what RDBMS is, and more. RDBMS is a type of database management system (DBMS) that stores data in a row-based table structure that connects related data elements. Data is the organization's primary resource in a computerized information system. For an organization to work successfully, proper data organization and administration are essential. The knowledge of how data is kept and managed on a computerized information system is known as a database management system. For better decision making, preserving data privacy, and efficiently regulating data, any organization requires precise and reliable data. Deposit and/or withdrawal from a bank, hotel, airline, or railway reservation, and grocery buy products are all examples of database access. Database management solutions enable users to share data across an organization quickly, effectively, and securely. A data management system allows faster access to more accurate data by offering quick answers to database queries. These DBMS notes are going to help the students to know more about the subject and practice confidently in the field. DBMS notes will include modules like - Introduction to DBMS, DBMS Applications, and Advantages of DBMS over the file processing system, DBMS Architecture, The three levels of DBMS Architecture, View of Data, Data Abstraction, Instances and Schemas, Data Models in DBMS namely - E-R Model in DBMS, ER Design Issues, ER To Table conversions, DMBS Generalization, DBMS Specialization, DBMS Specialization, DBMS Aggregation, etc. There are other modules like Relational Model in DBMS under which comes the module for Hierarchical data model in DBMS.