A company wants to consolidate its data from multiple databases, flat files, and cloud sources into a single data warehouse. Which phase of the ETL process will handle the collection of this data?
- Extraction
- Integration
- Loading
- Transformation
In the ETL (Extract, Transform, Load) process, the first phase is "Extraction." This phase is responsible for gathering data from various sources, such as databases, flat files, and cloud sources, and extracting it for further processing and storage in a data warehouse.
Loading...
Related Quiz
- Which technique in data mining involves identifying sets of items that frequently occur together in a dataset?
- In IT risk management, a(n) _______ is an unforeseen event that can have negative consequences for an organization's objectives.
- A common practice in data warehousing to ensure consistency and to improve join performance is to use _______ keys in fact tables.
- The practice of regularly verifying the accuracy, consistency, and reliability of data in a data warehouse is known as _______.
- In the context of Distributed Data Warehousing, what does "data locality" refer to?