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Computing a 5-D Cube with Two Shell Fragments

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Computing a 5-D Cube with Two Shell Fragments

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Questions and Answers

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?

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?

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?

Efficiently computing higher-level aggregates Signup and view all the answers

What is the primary purpose of multidimensional OLAP (MOLAP) in data storage?

To store data in a multidimensional array Signup and view all the answers

What is the primary advantage of simultaneous aggregation and caching of intermediate results?

Efficiently computing higher-level aggregates Signup and view all the answers

What is the primary purpose of sorting tuples in OLAP aggregation?

To facilitate the computation process by aggregating similar dimension values Signup and view all the answers

What is the primary advantage of aggregating from the smallest child cuboid when there exist multiple child cuboids?

Computing higher-level aggregates more efficiently Signup and view all the answers

What is the primary purpose of aggregation in OLAP?

To compute higher-level aggregates from lower-level aggregates Signup and view all the answers

What is the primary advantage of using multidimensional arrays in MOLAP?

Facilitating fast querying and retrieval of data Signup and view all the answers