Explanation:The Array of Ancestors pattern stores each tree node in a document; in addition to the tree node, document stores in an array the id(s) of the node’s ancestors or path. 8. The Array of Ancestors pattern is slightly slower than the ________________ pattern
A. Materialized Paths
B. Array of Ancestors
C. Nested Sets
D. None of the mentioned
Answer:A
Explanation:The Array of Ancestors pattern stores each tree node in a document; in addition to the tree node, document stores in an array the id(s) of the node’s ancestors or path. 8. The Array of Ancestors pattern is slightly slower than the ________________ pattern
A. Materialized Paths B. Array of Ancestors C. Nested Sets D. None of the mentioned
Explanation:The Array of Ancestors pattern provides a fast and efficient solution to find the descendants and the ancestors of a node by creating an index on the elements of the ancestors field. 9. The ____________ pattern identifies each node in the tree as stops in a round-trip traversal of the tree.