One of the methods to increase query performance in columnar databases is by using _______ encoding techniques.
- Aggregation
- Compression
- Index
- Sorting
In columnar databases, improving query performance is achieved by using compression techniques. Data compression reduces the amount of storage space required and speeds up data retrieval as less data needs to be read from disk or memory. Columnar databases often employ various compression algorithms to achieve this.
Loading...
Related Quiz
- What is the primary goal of a Data Warehouse in Business Intelligence?
- In the context of cloud computing, what does "elasticity" refer to, especially concerning capacity planning and scalability?
- A data engineer notices that the dimension tables in the data warehouse have become quite large and complex, with multiple levels of hierarchies. To improve the clarity and structure of the schema, which design modification should they consider?
- Which term describes the process of updating the data in a data warehouse to reflect recent transactions?
- Which data mining technique is primarily used for classification and regression tasks and works by constructing a multitude of decision trees during training?