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QUESTION 281
Hotspot Question
You deploy a Microsoft Azure SQL Data Warehouse instance. The instance must be available eight hours each day.
You need to pause Azure resources when they are not in use to reduce costs.
What will be the impact of pausing resources? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
To save costs, you can pause and resume compute resources on-demand. For example, if you won’t be using the database during the night and on weekends, you can pause it during those times, and resume it during the day. You won’t be charged for DWUs while the database is paused.
When you pause a database:
Compute and memory resources are returned to the pool of available resources in the data center
Data Warehouse Unit (DWU) costs are zero for the duration of the pause. Data storage is not affected and your data stays intact. SQL Data Warehouse cancels all running or queued operations.
When you resume a database:
SQL Data Warehouse acquires compute and memory resources for your DWU setting.
Compute charges for your DWUs resume.
Your data will be available.
You will need to restart your workload queries.
References: https://docs.microsoft.com/en-us/azure/sql-data-warehouse/sql-data-warehouse-manage-compute-rest-api
QUESTION 282
Drag and Drop Question
You have a data warehouse.
You need to move a table named Fact.ErrorLog to a new filegroup named LowCost.
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.
Answer:
Explanation:
Step 1: Add a filegroup named LowCost to the database.
First create a new filegroup.
Step 2:
The next stage is to go to the `Files’ page in the same Properties window and add a file to the filegroup (a filegroup always contains one or more files)
Step 3:
To move a table to a different filegroup involves moving the table’s clustered index to the new filegroup. While this may seem strange at first this is not that surprising when you remember that the leaf level of the clustered index actually contains the table data. Moving the clustered index can be done in a single statement using the DROP_EXISTING clause as follows (using one of the AdventureWorks2008R2 tables as an example) :
CREATE UNIQUE CLUSTERED INDEX PK_Department_DepartmentID ON HumanResources.Department(DepartmentID)
WITH (DROP_EXISTING=ON,ONLINE=ON) ON SECONDARY
This recreates the same index but on the SECONDARY filegroup.
References:
http://www.sqlmatters.com/Articles/Moving%20a%20Table%20to%20a%20Different%20Filegroup.aspx
QUESTION 283
Hotspot Question
You have a Microsoft SQL Server Data Warehouse instance that uses SQL Server Analysis Services (SSAS). The instance has a cube containing data from an on-premises SQL Server instance. A measure named Measure1 is configured to calculate the average of a column.
You plan to change Measure1 to a full additive measure and create a new measure named Measure2 that evaluates data based on the first populated row.
You need to configure the measures.
What should you do? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Box 1:
The default setting is SUM (fully additive).
Box 2:
FirstNonEmpty: The member value is evaluated as the value of its first child along the time dimension that contains data.
References: https://docs.microsoft.com/en-us/sql/analysis-services/multidimensional-models/define-semiadditive-behavior
QUESTION 284
Drag and Drop Question
You administer a Microsoft SQL Server Master Data Services (MDS) model. All model entity members have passed validation.
The current model version should be committed to form a record of master data that can be audited and create a new version to allow the ongoing management of the master data.
You lock the current version. You need to manage the model versions.
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.
Answer:
Explanation:
Box 1: Validate the current version.
In Master Data Services, validate a version to apply business rules to all members in the model version.
You can validate a version after it has been locked.
Box 2: Commit the current version.
In Master Data Services, commit a version of a model to prevent changes to the model’s members and their attributes. Committed versions cannot be unlocked.
Prerequisites:
Box 3: Create a copy of the current version.
In Master Data Services, copy a version of the model to create a new version of it.
QUESTION 285
Hotspot Question
You manage an inventory system that has a table named Products. The Products table has several hundred columns.
You generate a report that relates two columns named ProductReference and ProductName from the Products table. The result is sorted by a column named QuantityInStock from largest to smallest.
You need to create an index that the report can use.
How should you complete the Transact-SQL statement? To answer, select the appropriate Transact-SQL segments in the answer area.
Answer:
QUESTION 286
Hotspot Question
You have the Microsoft SQL Server Integration Services (SSIS) package shown in the Control flow exhibit. (Click the Exhibit button.)
The package iterates over 100 files in a local folder. For each iteration, the package increments a variable named loop as shown in the Expression task exhibit. (Click the Exhibit button) and then imports a file. The initial value of the variable loop is 0.
You suspect that there may be an issue with the variable value during the loop. You define a breakpoint on the Expression task as shown in the BreakPoint exhibit. (Click the Exhibit button.)
You need to check the value of the loop variable value.
For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Break condition: When the task or container receives the OnPreExecute event. Called when a task is about to execute. This event is raised by a task or a container immediately before it runs.
The loop variable does not reset.
With the debugger, you can break, or suspend, execution of your program to examine your code, evaluate and edit variables in your program, etc.
QUESTION 287
Hotspot Question
You have a database named DB1. You create a Microsoft SQL Server Integration Services (SSIS) package that incrementally imports data from a table named Customers. The package uses an OLE DB data source for connections to DB1. The package defines the following variables.
To support incremental data loading, you create a table by running the following Transact- SQL segment:
You need to create a DML statements that updates the LastKeyByTable table.
How should you complete the Transact-SQL statement? To answer, select the appropriate Transact-SQL segments in the dialog box in the answer area.
Answer:
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