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Implementing a SQL Data Warehouse

Question No: 11 HOTSPOT

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.

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To support incremental data loading, you create a table by running the following Transact- SQL segment:

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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.

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Answer:

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Question No: 12

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

After you answer a question in this sections, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

You have the following line-of-business solutions:

-> If a change is made to the ReferenceNr column in any of the sources, set the value of IsDisabled to True and create a new row in the Products table.

-> If a row is deleted in any of the sources, set the value of IsDisabled to True in the

data warehouse.

One or more Microsoft SQL Server instances support each solution. Each solution has its own product catalog. You have an additional server that hosts SQL Server Integration Services (SSIS) and a data warehouse. You populate the data warehouse with data from each of the line-of-business solutions. The data warehouse does not store primary key values from the individual source tables.

The database for each solution has a table named Products that stored product information. The Products table in each database uses a separate and unique key for product records. Each table shares a column named ReferenceNr between the databases. This column is used to create queries that involve more than once solution.

You need to load data from the individual solutions into the data warehouse nightly. The following requirements must be met:

-> Enable the Change Tracking for the Product table in the source databases.

-> Query the cdc.fn_cdc_get_all_changes_capture_dbo_products function from the sources for updated rows.

-> Set the IsDisabled column to True for rows with the old ReferenceNr value.

-> Create a new row in the data warehouse Products table with the new ReferenceNr value.

Solution: Perform the following actions: Does the solution meet the goal?

  1. Yes

  2. No

Answer: B Explanation:

We must also handle the deleted rows, not just the updated rows.

References: https://solutioncenter.apexsql.com/enable-use-sql-server-change-data- capture/

Question No: 13

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

After you answer a question in this sections, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

You have a data warehouse that stores information about products, sales, and orders for a manufacturing company. The instance contains a database that has two tables named SalesOrderHeader and SalesOrderDetail. SalesOrderHeader has 500,000 rows and SalesOrderDetail has 3,000,000 rows.

Users report performance degradation when they run the following stored procedure:

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You need to optimize performance.

Solution: You run the following Transact-SQL statement:

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Does the solution meet the goal?

  1. Yes

  2. No

Answer: A Explanation:

You can specify the sample size as a percent. A 5% statistics sample size would be helpful.

References: https://docs.microsoft.com/en-us/azure/sql-data-warehouse/sql-data- warehouse-tables-statistics

Question No: 14 HOTSPOT

You are testing a Microsoft SQL Server Integration Services (SSIS) package. The package includes the Control Flow task shown in the Control Flow exhibit (Click the Exhibit button) and the Data Flow task shown in the Data Flow exhibit. (Click the Exhibit button.)

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You declare a variable named Seed as shown in the Variables exhibit. (Click the Exhibit button.) The variable is changed by the Script task during execution.

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You need to be able to interrogate the value of the Seed variable after the Script task completes execution.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

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Answer:

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Explanation:

Dumps4Cert 2018 PDF and VCE

References:

https://docs.microsoft.com/en-us/sql/integration-services/variables-window

Question No: 15 HOTSPOT

You manage a data warehouse in a Microsoft SQL Server instance. Company employee information is imported from the human resources system to a table named Employee in the data warehouse instance. The Employee table was created by running the query shown in the Employee Schema exhibit. (Click the Exhibit button.)

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The personal identification number is stored in a column named EmployeeSSN. All values in the EmployeeSSN column must be unique.

When importing employee data, you receive the error message shown in the SQL Error exhibit. (Click the Exhibit button.).

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You determine that the Transact-SQL statement shown in the Data Load exhibit in the cause of the error. (Click the Exhibit button.)

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You remove the constraint on the EmployeeSSN column. You need to ensure that values in the EmployeeSSN column are unique.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

NOTE: Each correct selection is worth one point.

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Answer:

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Explanation:

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With the ANSI standards SQL:92, SQL:1999 and SQL:2003, an UNIQUE constraint must disallow duplicate non-NULL values but accept multiple NULL values.

In the Microsoft world of SQL Server however, a single NULL is allowed but multiple NULLs are not.

From SQL Server 2008, you can define a unique filtered index based on a predicate that excludes NULLs.

References: https://stackoverflow.com/questions/767657/how-do-i-create-a-unique- constraint-that-also-allows-nulls

Question No: 16

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

After you answer a question in this sections, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

You have a Microsoft Azure SQL Data Warehouse instance that must be available six months a day for reporting.

You need to pause the compute resources when the instance is not being used. Solution: You use the Azure portal.

Does the solution meet the goal?

  1. Yes

  2. No

    Answer: A

    Explanation:

    To pause a SQL Data Warehouse database, use any of these individual methods. Pause compute with Azure portal

    Pause compute with PowerShell Pause compute with REST APIs

    Note: To pause a database:

    1. Open the Azure portal and open your database. Notice that the Status is Online.

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    2. To suspend compute and memory resources, click Pause, and then a confirmation message appears. Click yes to confirm or no to cancel.

      References:

      https://docs.microsoft.com/en-us/azure/sql-data-warehouse/sql-data-warehouse-manage- compute-overview

      https://docs.microsoft.com/en-us/azure/sql-data-warehouse/sql-data-warehouse-manage- compute-portal#pause-compute-bk

      Question No: 17 DRAG DROP

      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.

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      Answer:

      Dumps4Cert 2018 PDF and VCE

      Explanation:

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      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#39;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. Note:

      References:

      Question No: 18 DRAG DROP

      You have a Microsoft SQL Server Integration Services (SSIS) package that loads data into a data warehouse each night from a transactional system. The package also loads data from a set of Comma-Separated Values (CSV) files that are provided by your company’s finance department.

      The SSIS package processes each CSV file in a folder. The package reads the file name for the current file into a variable and uses that value to write a log entry to a database table.

      You need to debug the package and determine the value of the variable before each file is processed.

      Which four 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.

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      Answer:

      Dumps4Cert 2018 PDF and VCE

      Explanation:

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      You debug control flows.

      The Foreach Loop container is used for looping through a group of files. Put the breakpoint on it.

      The Locals window displays information about the local expressions in the current scope of the Transact-SQL debugger.

      References: https://docs.microsoft.com/en-us/sql/integration- services/troubleshooting/debugging-control-flow http://blog.pragmaticworks.com/looping-through-a-result-set-with-the-foreach-loop

      Question No: 19 HOTSPOT

      You have a series of analytic data models and reports that provide insights into the

      participation rates for sports at different schools. Users enter information about sports and participants into a client application. The application stores this transactional data in a Microsoft SQL Server database. A SQL Server Integration Services (SSIS) package loads the data into the models.

      When users enter data, they do not consistently apply the correct names for the sports. The following table shows examples of the data entry issues.

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      You need to create a new knowledge base to improve the quality of the sport name data.

      How should you configure the knowledge base? To answer, select the appropriate options in the dialog box in the answer area.

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      Answer:

      Dumps4Cert 2018 PDF and VCE

      Explanation:

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      Spot 1: Create Knowledge base from: None

      Select None if you do not want to base the new knowledge base on an existing knowledge base or data file.

      Question No: 20

      Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

      After you answer a question in this sections, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.

      You are developing a Microsoft SQL Server Integration Services (SSIS) projects. The project consists of several packages that load data warehouse tables.

      You need to extend the control flow design for each package to use the following control flow while minimizing development efforts and maintenance:

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      Solution: You add the control flow to an ASP.NET assembly. You add a script task that references this assembly to each data warehouse load package.

      Does the solution meet the goal?

      1. Yes

      2. No

Answer: B Explanation:

A package consists of a control flow and, optionally, one or more data flows. You create the control flow in a package by using the Control Flow tab in SSIS Designer.

References: https://docs.microsoft.com/en-us/sql/integration-services/control-flow/control- flow

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