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HOTSPOT You have an Azure subscription that contains an Azure Synapse Analytics dedicated SQL pool named Pool1 and an Azure Data Lake Storage account named storage1. Storage1 requires secure transfers. You need to create an external data source in Pool1 that will be used to read .orc files in storage1. How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.
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HOTSPOT From a website analytics system, you receive data extracts about user interactions such as downloads, link clicks, form submissions, and video plays. The data contains the following columns. You need to design a star schema to support analytical queries of the data. The star schema will contain four tables including a date dimension. To which table should you add each column? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.
HOTSPOT You need to output files from Azure Data Factory. Which file format should you use for each type of output? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.
You have files and folders in Azure Data Lake Storage Gen2 for an Azure Synapse workspace as shown in the following exhibit. You create an external table named ExtTable that has LOCATION='/topfolder/'. When you query ExtTable by using an Azure Synapse Analytics serverless SQL pool, which files are returned?
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Question 78 - DP-203 discussion

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You are implementing a batch dataset in the Parquet format. Data files will be produced be using Azure Data Factory and stored in Azure Data Lake Storage Gen2. The files will be consumed by an Azure Synapse Analytics serverless SQL pool. You need to minimize storage costs for the solution.

What should you do?

A.
Use Snappy compression for files.
Answers
A.
Use Snappy compression for files.
B.
Use OPENROWSET to query the Parquet files.
Answers
B.
Use OPENROWSET to query the Parquet files.
C.
Create an external table that contains a subset of columns from the Parquet files.
Answers
C.
Create an external table that contains a subset of columns from the Parquet files.
D.
Store all data as string in the Parquet files.
Answers
D.
Store all data as string in the Parquet files.
Suggested answer: C

Explanation:

An external table points to data located in Hadoop, Azure Storage blob, or Azure Data Lake Storage. External tables are used to read data from files or write data to files in Azure Storage. With Synapse SQL, you can use external tables to read external data using dedicated SQL pool or serverless SQL pool.

Reference:

https://docs.microsoft.com/en-us/azure/synapse-analytics/sql/develop-tables-external-tables

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asked 02/10/2024
Johannes Bickel
55 questions
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