Which of the data repositories serves as a pool of raw data and stores large amounts of structured, semi-structured, and unstructured data in their native formats

Data lakes.

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

Data lakes can be defined as data repositories which serves as a pool of raw data and stores large amounts of structured, semi-structured, and unstructured data in their native formats. These pool of raw or natural data allow data scientists to perform various tasks such as artificial intelligence (AI), machine learning, visualization, reporting, advanced analytical study, etc.