Question

a)
“At intervals along the way they built columns of snow;"'- Why did they do so?​

Answer 1

Answer: When the first stream for a table is created, a pair of hidden columns are added to ... A stream advances the offset only when it is used in a DML transaction. ... The following diagram shows how the contents of a standard table stream ... the end point for the change tracking interval can be set using the optional END clause.

Explanation: