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Which of the following descriptions best fits Delta Lake?
A Spark API for exporting data from a relational database into CSV files.
A relational storage layer for Spark that supports tables based on Parquet files.
A synchronization solution that replicates data between SQL Server and Spark clusters.
You've loaded a Spark dataframe with data, that you now want to use in a Delta Lake table. What format should you use to write the dataframe to storage?
CSV
PARQUET
DELTA
What feature of Delta Lake enables you to retrieve data from previous versions of a table?
Spark Structured Streaming
Time Travel
Catalog Tables
You have a managed catalog table that contains Delta Lake data. If you drop the table, what will happen?
The table metadata and data files will be deleted.
The table metadata will be removed from the catalog, but the data files will remain intact.
The table metadata will remain in the catalog, but the data files will be deleted.
When using Spark Structured Streaming, a Delta Lake table can be which of the following?
Only a source
Only a sink
Either a source or a sink
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