Podcast
Questions and Answers
What is the primary advantage of sorting, hashing, and grouping tuples in OLAP aggregation?
What is the primary advantage of sorting, hashing, and grouping tuples in OLAP aggregation?
- Improving data visualization for better business insights
- Facilitating the computation process by aggregating similar dimension values (correct)
- Reducing the size of the fact table
- Enhancing data security by encrypting sensitive information
Which optimization technique is most effective when there exist multiple child cuboids?
Which optimization technique is most effective when there exist multiple child cuboids?
- Aggregating from the smallest child cuboid (correct)
- Simultaneously aggregating and caching intermediate results
- Aggregating from the largest parent cuboid
- Sorting and hashing tuples
What is the primary purpose of relational OLAP (ROLAP) in data storage?
What is the primary purpose of relational OLAP (ROLAP) in data storage?
- To optimize data querying and retrieval
- To facilitate data visualization and business insights
- To store data in relational tables (correct)
- To store data in a multidimensional array
What is the advantage of computing higher-level aggregates from previously computed lower-level aggregates?
What is the advantage of computing higher-level aggregates from previously computed lower-level aggregates?
What is the primary purpose of multidimensional OLAP (MOLAP) in data storage?
What is the primary purpose of multidimensional OLAP (MOLAP) in data storage?
What is the primary advantage of simultaneous aggregation and caching of intermediate results?
What is the primary advantage of simultaneous aggregation and caching of intermediate results?
What is the primary purpose of sorting tuples in OLAP aggregation?
What is the primary purpose of sorting tuples in OLAP aggregation?
What is the primary advantage of aggregating from the smallest child cuboid when there exist multiple child cuboids?
What is the primary advantage of aggregating from the smallest child cuboid when there exist multiple child cuboids?
What is the primary purpose of aggregation in OLAP?
What is the primary purpose of aggregation in OLAP?
What is the primary advantage of using multidimensional arrays in MOLAP?
What is the primary advantage of using multidimensional arrays in MOLAP?
