Book presents a detailed discussion on current trends and technologies of databases in easy-to-understand language. Concepts of DBMS architecture and fundamentals of database design, covering topics like Entity Relationship diagram, Normalization, Aggregation, Functional dependencies, Clustering indexes, etc. are explained in a simple manner so that students of all streams can understand the subject matter easily. Properties of relational model, concept of keys, integrity rules and query language are portrayed in a very comprehensive manner to build a strong foundation in Relational Database Management System.