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NEW QUESTION 45

When building a DLT s pipeline you have two options to create a live tables, what is the main dif-ference between CREATE STREAMING LIVE TABLE vs CREATE LIVE TABLE?

  • A. CREATE LIVE TABLE is used when working with Streaming data sources and Incremental data
  • B. CREATE STREAMING LIVE TABLE is used when working with Streaming data sources and Incremental data
  • C. CREATE LIVE TABLE is used in DELTA LIVE TABLES, CREATE STREAMING LIVE can only used in Structured Streaming applications
  • D. There is no difference both are the same, CREATE STRAMING LIVE will be deprecated soon
  • E. CREATE STREAMING LIVE table is used in MULTI HOP Architecture

Answer: B

Explanation:

Explanation

The answer is, CREATE STREAMING LIVE TABLE is used when working with Streaming data sources and Incremental data

NEW QUESTION 46

How VACCUM and OPTIMIZE commands can be used to manage the DELTA lake?

  • A. VACCUM command can be used to delete empty/blank parquet files in a delta table. OPTIMIZE command can be used to update stale statistics on a delta table.
  • B. VACCUM command can be used to delete empty/blank parquet files in a delta table, OPTIMIZE command can be used to cache frequently delta tables for better perfor-mance.
  • C. OPTIMIZE command can be used to compact small parquet files, and the VAC-CUM command can be used to delete parquet files that are marked for deletion/unused.

    (Correct)
  • D. VACCUM command can be used to compact small parquet files, and the OP-TIMZE command can be used to delete parquet files that are marked for dele-tion/unused.
  • E. VACCUM command can be used to compress the parquet files to reduce the size of the table, OPTIMIZE command can be used to cache frequently delta tables for better performance.

Answer: C

Explanation:

Explanation

VACCUM:

You can remove files no longer referenced by a Delta table and are older than the retention thresh-old by running the vacuum command on the table. vacuum is not triggered automatically. The de-fault retention threshold for the files is 7 days. To change this behavior, see Configure data reten-tion for time travel.

OPTIMIZE:

Using OPTIMIZE you can compact data files on Delta Lake, this can improve the speed of read queries on the table. Too many small files can significantly degrade the performance of the query.

NEW QUESTION 47

Kevin is the owner of the schema sales, Steve wanted to create new table in sales schema called regional_sales so Kevin grants the create table permissions to Steve. Steve creates the new table called regional_sales in sales schema, who is the owner of the table regional_sales

  • A. Steve is the owner of the table
  • B. By default ownership is assigned to DEFAULT_OWNER
  • C. Kevin and Smith both are owners of table
  • D. By default ownership is assigned DBO
  • E. Kevin is the owner of sales schema, all the tables in the schema will be owned by Kevin

Answer: A

Explanation:

Explanation

A user who creates the object becomes its owner, does not matter who is the owner of the parent object.

NEW QUESTION 48

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