This document provides an introduction to database management systems and database concepts. It defines key terms like DBMS, database, data, and file processing systems. It describes the advantages of DBMSs over file processing systems, including reduced data redundancy, more flexible data access, support for concurrent access, and enforced data security and integrity. It also covers database models, database schemas, data independence, data definition and manipulation languages, and core concepts of the relational database model like tables, rows, columns, domains, and primary keys.