Databricks Certified Data Engineer - Professional
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Which statement accurately describes the features of Delta Lake and the Lakehouse architecture?
A
Parquet utilizes row-by-row compression, meaning that string data is only compressed when specific characters are repeated multiple times.
B
Primary and foreign key constraints are strictly enforced by the Delta engine to prevent the insertion of duplicate values into dimension tables.
C
Delta Lake automatically gathers statistics on the first 32 columns of each table, which are used for data skipping to optimize query performance.
D
Views in the Lakehouse architecture maintain a continuous, valid cache of the most recent versions of all underlying source tables.