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Download DemoVendor: Microsoft
Certifications: Microsoft Certifications
Exam Code: DP-203
Exam Name: Data Engineering on Microsoft Azure
Updated: Jan 18, 2025
Q&As: 398 ( View Details)
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You are designing a data mart for the human resources (HR) department at your company. The data mart will contain employee information and employee transactions.
From a source system, you have a flat extract that has the following fields:
1.
EmployeeID
2.
FirstName
3.
LastName
4.
Recipient
5.
GrossAmount
6.
TransactionID
7.
GovernmentID
8.
NetAmountPaid
9.
TransactionDate
You need to design a star schema data model in an Azure Synapse Analytics dedicated SQL pool for the data mart.
Which two tables should you create? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
A. a dimension table for Transaction
B. a dimension table for EmployeeTransaction
C. a dimension table for Employee
D. a fact table for Employee
E. a fact table for Transaction
Correct Answer: CE
C: Dimension tables contain attribute data that might change but usually changes infrequently. For example, a customer's name and address are stored in a dimension table and updated only when the customer's profile changes. To minimize the size of a large fact table, the customer's name and address don't need to be in every row of a fact table. Instead, the fact table and the dimension table can share a customer ID. A query can join the two tables to associate a customer's profile and transactions.
E: Fact tables contain quantitative data that are commonly generated in a transactional system, and then loaded into the dedicated SQL pool. For example, a retail business generates sales transactions every day, and then loads the data into a dedicated SQL pool fact table for analysis.
Reference: https://docs.microsoft.com/en-us/azure/synapse-analytics/sql-data-warehouse/sql-data-warehouse-tables-overview
You use Azure Stream Analytics to receive data from Azure Event Hubs and to output the data to an Azure Blob Storage account.
You need to output the count of records received from the last five minutes every minute.
Which windowing function should you use?
A. Session
B. Tumbling
C. Sliding
D. Hopping
Correct Answer: D
Hopping window functions hop forward in time by a fixed period. It may be easy to think of them as Tumbling windows that can overlap and be emitted more often than the window size. Events can belong to more than one Hopping window result set. To make a Hopping window the same as a Tumbling window, specify the hop size to be the same as the window size.
Reference: https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-window-functions
You have an Azure subscription that contains a storage account named storage1 and an Azure Synapse Analytics dedicated SQL pool. The storage1 account contains a CSV file that requires an account key for access.
You plan to read the contents of the CSV file by using an external table.
You need to create an external data source for the external table.
What should you create first?
A. a database role
B. a database scoped credential
C. a database view
D. an external file format
Correct Answer: B
External Data Source The external data source object provides the connection information required to connect to the external data source itself. Let's begin by collecting the URL and the access key. Sign in to the Azure Portal, and navigate to your storage account. Click on Access Keys and copy the Key and the Storage account name to a notepad.
Create an import database The next step is to create a database scoped credential to secure the credentials to the ADLS account. Create a database master key if one does not already exist, and then encrypt the database-scoped credential named ADLS_Credential using the master key.
Reference: https://towardsdatascience.com/loading-csv-data-into-azure-synapse-analytics-by-using-polybase-5ae942ce3059
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