Data Science This article tells about the data science introduction, descriptive, diagnostic, predictive and perspective, database management system, data models -conceptual data model, logical data model, physical data model, object-oriented data model, relational data model, and history of data models , hierarchical database management system, network database management system, relational database management system Data Data is nothing but a piece of information (OR) we can say data is a collection of record Data can be of different types, such as numerical, categorical, text, image, audio, and video data. Data can be collected through various sources such as surveys, experiments, observations, sensors, and social media platforms Science S...