Data Retrieval

What is data retrieval?

Data retrieval (also known as data extraction) involves retrieving specific information from various sources, transforming it into a usable format, and storing it for analysis. It's a crucial step in obtaining meaningful insights from diverse datasets.

How does data retrieval work?

Data retrieval works by the user issuing a query containing specific criteria to the database management system (DBMS). The DBMS then sifts through the database to select the requested data based on the provided criteria. Once retrieved, the data can be stored in a file, printed, or displayed on the screen for the user. Additionally, data retrieval often involves the DBMS optimizing the retrieval process by employing various algorithms and indexing techniques to locate and retrieve the desired data efficiently.