A Database Management System (DBMS) stores data in the form of tables and uses an ER model and the goal is ACID properties. For example, a DBMS of a college has tables for students, faculty, etc.

A Data Warehouse is separate from DBMS, it stores a huge amount of data, which is typically collected from multiple heterogeneous sources like files, DBMS, etc. The goal is to produce statistical results that may help in decision-making. For example, a college might want to see quick different results, like how the placement of CS students has improved ...