This document provides an in-depth understanding of database design and implementation. It covers topics such as the difference between RDBMS and File-Based System, advantages and disadvantages of RDBMS, limitations of RDBMS, advantages and disadvantages of file-based system, advantages and disadvantages of hierarchical, network and relational database models, strengths and weaknesses of top-down and bottom-up approaches, conceptual modeling, logical modeling, and SQL script.