Big Data and AI

Dimensional Modeling in Business Intelligence: Simplifying Data Analysis In the field of Business Intelligence (BI) , relational databases and their modeling techniques play a crucial role in managing and analyzing data. One specific modeling technique used in BI is dimensional modeling , which is optimized for quick data retrieval from a data warehouse . From Relational Databases to Dimensional Modeling To begin, let's review relational databases . They consist of tables connected through primary keys and foreign keys , which establish relationships between the tables. For example, in a car dealership database, the Branch ID serves as the primary key in the car dealerships table, while acting as a foreign key in the product details table. This establishes a direct connection between these two tables. Additionally, the VIN acts as the primary key in the product details table and as a foreign key in the repair parts table. These connections create...