1) What does data integration refer to?
2) Which of the following is a common data source for ETL?
3) What is a source system in the context of ETL?
4) Which of the following best describes ETL mapping?
6) Which of the following is an ETL tool?
7) What is the primary function of an ETL tool?
8) Which of the following is a feature of modern ETL tools?
9) What is an example of an open-source ETL tool?
10) Which of the following is NOT a function of an ETL tool?
11) What is data warehousing as a service (DWaaS)?
12) Which of the following concepts refers to storing data in a columnar format?
13) What is the main benefit of using a dimensional model in data warehousing?
14) What does the term "star schema" refer to?
15) What is the role of metadata in a data warehouse?
16) Which of the following techniques is used for performance tuning in data warehouses?
17) What is the purpose of data partitioning?
18) Which of the following is a benefit of using materialized views?
19) What is the main advantage of using an indexing strategy in a data warehouse?
20) What is the purpose of query optimization?
