data science

Introduction A data model is a description of how data is organized and represented. The primary goal of a data model is to ensure that the data required by the business is accurately represented and efficiently stored in a database. There are three types of data models. Conceptual Data Model It provides a high-level overview of the data needed in a business process. This type of data model identifies the data that should be collected and stored in the future for a business process. Logical Data Model It provides detailed data descriptions without taking into account physical storage implementation. It also describes entity attributes and relationships. Physical Data Model  It is derived using a logical data model. It represents the data's implemented design. It describes how data relationships are implemented through the use of table structures, primary keys, foreign keys, column names, column format, and so on. Why is it important to pick the right tool among various data modelin...