DRAG DROP (Drag and Drop is not supported)You have data stored in thousands of CSV files in Azure Data Lake Storage Gen2. Each file has a header row followed by a properly formatted carriage return (/r) and line feed (/n).You are implementing a pattern that batch loads the files daily into an enterprise data warehouse in Azure Synapse Analytics by using PolyBase.You need to skip the header row when you import the files into the data warehouse. Before building the loading pattern, you need to prepare the required database objects in Azure Synapse Analytics.Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.NOTE: Each correct selection is worth one point Select and Place:
Answer(s): A
Step 1: Create an external data source that uses the abfs locationCreate External Data Source to reference Azure Data Lake Store Gen 1 or 2 Step 2: Create an external file format and set the First_Row option.Create External File Format.Step 3: Use CREATE EXTERNAL TABLE AS SELECT (CETAS) and configure the reject options to specify reject values or percentagesTo use PolyBase, you must create external tables to reference your external data. Use reject options.Note: REJECT options don't apply at the time this CREATE EXTERNAL TABLE AS SELECT statement is run.Instead, they're specified here so that the database can use them at a later time when it imports data from the external table. Later, when the CREATE TABLE AS SELECT statement selects data from the external table, the database will use the reject options to determine the number or percentage of rows that can fail to import before it stops the import.
https://docs.microsoft.com/en-us/sql/relational-databases/polybase/polybase-t-sql-objects https://docs.microsoft.com/en-us/sql/t-sql/statements/create-external-table-as-select-transact-sql
HOTSPOT (Drag and Drop is not supported)You are building an Azure Synapse Analytics dedicated SQL pool that will contain a fact table for transactions from the first half of the year 2020.You need to ensure that the table meets the following requirements:-Minimizes the processing time to delete data that is older than 10 years -Minimizes the I/O for queries that use year-to-date valuesHow should you complete the Transact-SQL statement? To answer, select the appropriate options in the answer area.NOTE: Each correct selection is worth one point. Hot Area:
Box 1: PARTITIONRANGE RIGHT FOR VALUES is used with PARTITION.Part 2: [TransactionDateID] Partition on the date column.Example: Creating a RANGE RIGHT partition function on a datetime columnThe following partition function partitions a table or index into 12 partitions, one for each month of a year's worth of values in a datetime column.CREATE PARTITION FUNCTION [myDateRangePF1] (datetime)AS RANGE RIGHT FOR VALUES ('20030201', '20030301', '20030401','20030501', '20030601', '20030701', '20030801','20030901', '20031001', '20031101', '20031201');
https://docs.microsoft.com/en-us/sql/t-sql/statements/create-partition-function-transact-sql
You are performing exploratory analysis of the bus fare data in an Azure Data Lake Storage Gen2 account by using an Azure Synapse Analytics serverless SQL pool.You execute the Transact-SQL query shown in the following exhibit.What do the query results include?
Answer(s): D
DRAG DROP (Drag and Drop is not supported)You use PySpark in Azure Databricks to parse the following JSON input.You need to output the data in the following tabular format.How should you complete the PySpark code? To answer, drag the appropriate values to the correct targets. Each value may be used once, more than once, or not at all. You may need to drag the spit bar between panes or scroll to view content.NOTE: Each correct selection is worth one point. Select and Place:
Box 1: selectBox 2: explodeBop 3: aliaspyspark.sql.Column.alias returns this column aliased with a new name or names (in the case of expressions that return more than one column, such as explode).
https://spark.apache.org/docs/latest/api/python/reference/api/pyspark.sql.Column.alias.html https://docs.microsoft.com/en-us/azure/databricks/sql/language-manual/functions/explode
HOTSPOT (Drag and Drop is not supported)You are designing an application that will store petabytes of medical imaging data.When the data is first created, the data will be accessed frequently during the first week. After one month, the data must be accessible within 30 seconds, but files will be accessed infrequently. After one year, the data will be accessed infrequently but must be accessible within five minutes.You need to select a storage strategy for the data. The solution must minimize costs.Which storage tier should you use for each time frame? To answer, select the appropriate options in the answer area.NOTE: Each correct selection is worth one point. Hot Area:
Box 1: HotHot tier - An online tier optimized for storing data that is accessed or modified frequently. The Hot tier has the highest storage costs, but the lowest access costs.Box 2: CoolCool tier - An online tier optimized for storing data that is infrequently accessed or modified. Data in the Cool tier should be stored for a minimum of 30 days. The Cool tier has lower storage costs and higher access costs compared to the Hot tier.Box 3: CoolNot Archive tier - An offline tier optimized for storing data that is rarely accessed, and that has flexible latency requirements, on the order of hours. Data in the Archive tier should be stored for a minimum of 180 days.
https://docs.microsoft.com/en-us/azure/storage/blobs/access-tiers-overview https://www.altaro.com/hyper-v/azure-archive-storage/
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