70-762 | Microsoft 70-762 Exam Dumps 2019

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NEW QUESTION 1
Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.
Your company has employees in different regions around the world.
You need to create a database table that stores the following employee attendance information:
- Employee ID
- date and time employee checked in to work
- date and time employee checked out of work
Date and time information must be time zone aware and must not store fractional seconds. Solution: You run the following Transact-SQL statement:
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Does the solution meet the goal?

  • A. Yes
  • B. No

Answer: A

Explanation: Datetimeoffset defines a date that is combined with a time of a day that has time zone awareness and is based on a 24-hour clock.
Syntaxis: datetimeoffset [ (fractional seconds precision) ]
Forthe use"datetimeoffset(0)", the Fractional seconds precision is 0, which is required here. References: https://msdn.microsoft.com/en-us/library/bb630289.aspx

NEW QUESTION 2
You manage a database with tables named Invoice and InvoiceDetails. Each invoice may have multiple records.
Users update the InvoiceDetails table by using a .NET web application. The application retrieves records from both tables and updates the tables by running an inline update statement.
Users experience slow performance when updating records in the application. The solution must meet the following requirements:
Must use a stored procedure.
Must not use inline update statements
Must use a table-valued parameter.
Must call the stored procedure to update all records. You need to optimize performance.
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:

    Explanation: Box 1: Create a user-defined table type…
    Table-valued parameters are declared by using user-defined table types. You can use table-valued parameters to send multiple rows of data to a Transact-SQL statement or a routine, such as a stored procedure or function, without creating a temporary table or many parameters.
    Box 2: ..read-only input parameter.
    Table-valued parameters must be passed as input READONLY parameters to Transact-SQL routines. Box 3:
    Example
    The following example uses Transact-SQL and shows you how to create a table-valued parameter type, declare a variable to reference it, fill the parameter list, and then pass the values to a stored procedure.
    USE AdventureWorks2012;
    /* Create a table type. */
    CREATE TYPE LocationTableType AS TABLE ( LocationName VARCHAR(50)
    , CostRate INT ); GO
    /* Create a procedure to receive data for the table-valued parameter. */ CREATE PROCEDURE dbo. usp_InsertProductionLocation
    @TVP LocationTableType READONLY Etc.¨
    /* Declare a variable that references the type. */ DECLARE @LocationTVP AS LocationTableType;
    /* Add data to the table variable. */
    INSERT INTO @LocationTVP (LocationName, CostRate) SELECT Name, 0.00
    FROM AdventureWorks2012.Person.StateProvince;
    /* Pass the table variable data to a stored procedure. */ EXEC usp_InsertProductionLocation @LocationTVP; GO
    References:
    https://docs.microsoft.com/en-us/sql/relational-databases/tables/use-table-valued-parameters-database-engine?vi

    NEW QUESTION 3
    Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.
    The Account table was created by using the following Transact-SQL statement:
    70-762 dumps exhibit
    There are more than 1 billion records in the Account table. The Account Number column uniquely identifies each account. The ProductCode column has 100 different values. The values are evenly distributed in the table. Table statistics are refreshed and up to date.
    You frequently run the following Transact-SQL SELECT statements:
    70-762 dumps exhibit
    You must avoid table scans when you run the queries. You need to create one or more indexes for the table. Solution: You run the following Transact-SQL statement:
    CREATE NONCLUSTERED INDEX IX_Account_ProductCode ON Account(ProductCode); Does the solution meet the goal?

    • A. Yes
    • B. No

    Answer: A

    Explanation: References: https://msdn.microsoft.com/en-za/library/ms189280.aspx

    NEW QUESTION 4
    You are maintaining statistics for a database table named tblTransaction. The table contains more than 10 million records.
    You need to create a stored procedure that meets the following requirements:
    - On weekdays, update statistics for a sample of the total number of records in the table.
    - On weekends, update statistics by sampling all rows in the table. A maintenance task will call this stored procedure daily.
    How should you complete the stored procedure? To answer, select the appropriate Transact-SQL segments in the answer area.
    NOTE: Each correct selection is worth one point.
    70-762 dumps exhibit

      Answer:

      Explanation: Box 1: UPDATE STATISTICS Box 2: SAMPLE 20 PERCENT
      UPDATE STATISTICS tablenameSAMPLE number { PERCENT | ROWS }
      Specifies the approximate percentage or number of rows in the table or indexed view for the query optimizer to use when it updates statistics. For PERCENT, number can be from 0 through 100 and for ROWS, number can be from0 to the total number of rows.
      Box 3: UPDATE STATISTICS Box 4: WITH FULLSCAN
      FULLSCAN computes statistics by scanning all rows in the table or indexed view. FULLSCAN and SAMPLE 100 PERCENT have the same results. FULLSCAN cannot be used with the SAMPLE option.
      References: https://msdn.microsoft.com/en-us/library/ms187348.aspx

      NEW QUESTION 5
      You run the following Transact-SQL statement:
      70-762 dumps exhibit
      There are multiple unique OrderlD values. Most of the UnitPrice values for the same OrderlD are different. You need to create a single index seek query that does not use the following operators:
      *Nested loop
      *Sort
      *Key lookup

      • A. CREATE INDEX IX_OrderLines_l ON OrderLines (OrderlD, UnitPrice) INCLUDE(Description, Quantity)
      • B. CREATE INDEX IX_OrderLines_l ON OrderLines (OrderlD, UnitPrice) INCLUOE(Quantity)
      • C. CREATE INDEX IX_OrderLines_l ON OrderLines (OrderlD, UnitPrice, Quantity)
      • D. CREATE INDEX IX_OrderLines_l ON OrderLines (UnitPrice, OrderlD) INCLUDE(Description, Quantity)

      Answer: A

      NEW QUESTION 6
      Note: This question is part of a series of questions that use the same or similar answer choices. An Answer
      choice may be correct for more than one question in the series. Each question independent of the other questions in this series. Information and details provided in a question apply only to that question.
      You are a database developer for a company. The company has a server that has multiple physical disks. The disks are not part of a RAID array. The server hosts three Microsoft SQL Server instances. There are many SQL jobs that run during off-peak hours.
      You must monitor the SQL Server instances in real time and optimize the server to maximize throughput, response time, and overall SQL performance.
      You need to collect query performance data while minimizing the performance impact on the SQL Server. What should you do?

      • A. Create a sys.dm_os_waiting_tasks query.
      • B. Create a sys.dm_exec_sessions query.
      • C. Create a Performance Monitor Data CollectorSet.
      • D. Create a sys.dm_os_memory_objects query.
      • E. Create a sp_configure ‘max server memory’ query.
      • F. Create a SQL Profiler trace.
      • G. Create a sys.dm_os_wait_stats query.
      • H. Create an Extended Event.

      Answer: C

      Explanation: SQL Server Data Collector is a feature for performance monitoring and tuning available in SQL Server Management Studio.
      Integration Services packages transform and load the collected data into the Microsoft Data Warehouse database.
      Collection sets are defined and deployed on a server instance and can be run independently of each other. Each collection set can be applied to a target that matches the target types of all the collector types that are part of a collection set. The collection set is run by a SQL Server Agent job or jobs, and data is uploaded to the management data warehouse on a predefined schedule.
      Predefined data collection sets include:
      * The Query Statistics data collection set collects information about query statistics, activity, execution plans and text on the SQL Server instance. It does not store all executed statements, only 10 worst performing ones.
      * Disk Usage data collection set collects information about disk space used by both data and log files for all
      databases on the SQL Server instance, growth trends, and average day growth. Etc.
      References:
      http://www.sqlshack.com/sql-server-performance-monitoring-data-collector/

      NEW QUESTION 7
      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 section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
      You have a database that is 130 GB and contains 500 million rows of data.
      Granular transactions and mass batch data imports change the database frequently throughout the day. Microsoft SQL Server Reporting Services (SSRS) uses the database to generate various reports by using several filters.
      You discover that some reports time out before they complete. You need to reduce the likelihood that the reports will time out.
      Solution: You increase the number of log files for the database. You store the log files across multiple disks. Does this meet the goal?

      • A. Yes
      • B. No

      Answer: A

      NEW QUESTION 8
      You have a database that is experiencing deadlock issues when users run queries. You need to ensure that all deadlocks are recorded in XML format.
      What should you do?

      • A. Create a Microsoft SQL Server Integration Services package that uses sys.dm_tran_locks.
      • B. Enable trace flag 1224 by using the Database Cpmsistency Checker(BDCC).
      • C. Enable trace flag 1222 in the startup options for Microsoft SQL Server.
      • D. Use the Microsoft SQL Server Profiler Lock:Deadlock event class.

      Answer: C

      Explanation: When deadlocks occur, trace flag 1204 and trace flag 1222 return information that is captured in the SQL Server error log. Trace flag 1204 reports deadlock information formatted by each node involved in the deadlock. Trace flag 1222 formats deadlock information, first by processes and then by resources.
      The output format for Trace Flag 1222 only returns information in an XML-like format. References: https://technet.microsoft.com/en-us/library/ms178104(v=sql.105).aspx

      NEW QUESTION 9
      You have a view that includes an aggregate.
      You must be able to change the values of columns in the view. The changes must be reflected in the tables that the view uses.
      You need to ensure that you can update the view. What should you create?

      • A. table-valued function
      • B. a schema-bound view
      • C. a partitioned view
      • D. a DML trigger

      Answer: B

      Explanation: When you use the SchemaBinding keyword while creating a view or function you bind the structure of any underlying tables or views. It means that as long as that schemabound object exists as a schemabound object (ie you don’t remove schemabinding) you are limited in changes that can be made to the tables or views that it refers to.
      References: https://sqlstudies.com/2014/08/06/schemabinding-what-why/

      NEW QUESTION 10
      You have a database that contains both disk-based and memory-optimized tables.
      You need to create two modules. The modules must meet the requirements described in the following table.
      70-762 dumps exhibit
      Which programming object should you use for each module? To answer, select the appropriate object types in the answer area.
      70-762 dumps exhibit

        Answer:

        Explanation: Module 1: Interpreted stored procedure
        An interpreted stored procedure can access both disk-based and memory-optimized tables. Module 2: Natively compiled stored procedure
        Natively compiled stored procedures are Transact-SQL stored procedures compiled to native code that access memory-optimized tables. Natively compiled stored procedures allow for efficient execution of the queries and business logic in the stored procedure.
        References:
        https://docs.microsoft.com/en-us/sql/relational-databases/in-memory-oltp/natively-compiled-stored-procedures?

        NEW QUESTION 11
        You are analyzing the performance of a database environment.
        You suspect there are several missing indexes in the current database.
        You need to return a prioritized list of the missing indexes on the current database.
        How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segments to the correct locations. Each Transact-SQL segment may be used once, more than once or not at all. You may need to drag the split bar between panes or scroll to view content.
        70-762 dumps exhibit

          Answer:

          Explanation: Box 1: sys.db_db_missing_index_group_stats
          The sys.db_db_missing_index_group_stats table include the required columns for the main query: avg_total_user_cost, avg_user_impact, user_seeks, and user scans.
          Box 2: group_handle
          Example: The following query determines which missing indexes comprise a particular missing index group, and displays their column details. For the sake of this example, the missing index group handle is 24.
          SELECT migs.group_handle, mid.*
          FROM sys.dm_db_missing_index_group_stats AS migs INNER JOIN sys.dm_db_missing_index_groups AS mig ON (migs.group_handle = mig.index_group_handle) INNER JOIN sys.dm_db_missing_index_details AS mid ON (mig.index_handle = mid.index_handle)
          WHERE migs.group_handle = 24;
          Box 3: sys.db_db_missing_index_group_stats
          The sys.db_db_missing_index_group_stats table include the required columns for the subquery: avg_total_user_cost and avg_user_impact.
          Example: Find the 10 missing indexes with the highest anticipated improvement for user queries
          The following query determines which 10 missing indexes would produce the highest anticipated cumulative improvement, in descending order, for user queries.
          SELECT TOP 10 *
          FROM sys.dm_db_missing_index_group_stats
          ORDER BY avg_total_user_cost * avg_user_impact * (user_seeks + user_scans)DESC;

          NEW QUESTION 12
          Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.
          The Account table was created by using the following Transact-SQL statement:
          70-762 dumps exhibit
          There are more than 1 billion records in the Account table. The Account Number column uniquely identifies each account. The ProductCode column has 100 different values. The values are evenly distributed in the table. Table statistics are refreshed and up to date.
          You frequently run the following Transact-SQL SELECT statements:
          70-762 dumps exhibit
          You must avoid table scans when you run the queries. You need to create one or more indexes for the table. Solution: You run the following Transact-SQL statement:
          CREATE CLUSTERED INDEX PK_Account ON Account(ProductCode); Does the solution meet the goal?

          • A. Yes
          • B. No

          Answer: B

          Explanation: We need an index on the productCode column as well.
          References: https://msdn.microsoft.com/en-us/library/ms190457.aspx

          NEW QUESTION 13
          Note: This question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other questions in this series. Information and details provided in a question apply only to that question.
          You have a Microsoft SQL Server database named DB1 that contains the following tables:
          70-762 dumps exhibit
          Users frequently run the following query:
          70-762 dumps exhibit
          Users report that the query takes a long time to return results.
          You need to minimize the amount of time required for the query to return data. What should you do?

          • A. Create clustered indexes on TBL1 and TBL2.
          • B. Create a clustered index on TBL1. Create a nonclustered index on TBL2 and add the most frequently queried columns as included columns.
          • C. Create a nonclustered index on TBL2 only.
          • D. Create unique constraints on both TBL1 and TBL2. Create a partitioned view that combines columnsfrom TBL1 and TBL2.
          • E. Drop existing indexes on TBL1 and then create a clustered columnstore inde
          • F. Create a nonclustered columnstore index on TBL1. Create a nonclustered index on TBL2.
          • G. Drop existing indexes on tbli and then create a clustered columnstore inde
          • H. Create a nonclustered columnstore index on tbl
          • I. Make no changes to TBL2.
          • J. Create CHECK constraints on both TBL1 and TBL2.. Create a partitioned view that combines columns fromTBL1 and TBL2.
          • K. Create an indexed view that combines columns from TBL1 and TBL2.

          Answer: D

          NEW QUESTION 14
          Case study Background
          You have a database named HR1 that includes a table named Employee.
          You have several read-only, historical reports that contain regularly changing totals. The reports use multiple queries to estimate payroll expenses. The queries run concurrently. Users report that the payroll estimate reports do not always run. You must monitor the database to identify issues that prevent the reports from running.
          You plan to deploy the application to a database server that supports other applications. You must minimize the amount of storage that the database requires.
          Employee Table
          You use the following Transact-SQL statements to create, configure, and populate the Employee table:
          70-762 dumps exhibit
          Application
          You have an application that updates the Employees table. The application calls the following stored procedures simultaneously and asynchronously:
          UspA: This stored procedure updates only the EmployeeStatus column.
          UspB: This stored procedure updates only the EmployeePayRate column.
          The application uses views to control access to data.
          Views must meet the following requirements:
          Allow user access to all columns in the tables that the view accesses.
          Restrict updates to only the rows that the view returns.
          70-762 dumps exhibit
          You observe that the four indexes require a large amount of disk space. You must reduce the amount of disk space that the indexes are using.
          You need to create a single index to replace the existing indexes.
          Which three Transact-SQL segments should you use to develop the solution? To answer, move the appropriate Transact-SQL segments from the list of Transact-SQL segments to the answer area and arrange them in the correct order.
          NOTE: More than one order of answer choices is correct. You will receive credit for any of the correct orders you select.
          70-762 dumps exhibit

            Answer:

            Explanation: Scenario: You observe that the four indexes require a large amount of disk space. You must reduce the amount of disk space that the indexes are using.
            Current indexes:
            70-762 dumps exhibit

            NEW QUESTION 15
            Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.
            The Account table was created by using the following Transact-SQL statement:
            70-762 dumps exhibit
            There are more than 1 billion records in the Account table. The Account Number column uniquely identifies each account. The ProductCode column has 100 different values. The values are evenly distributed in the table. Table statistics are refreshed and up to date.
            You frequently run the following Transact-SQL SELECT statements:
            70-762 dumps exhibit
            You must avoid table scans when you run the queries. You need to create one or more indexes for the table. Solution: You run the following Transact-SQL statement:
            70-762 dumps exhibit
            Does the solution meet the goal?

            • A. Yes
            • B. No

            Answer: B

            Explanation: Create a clustered index on the AccountNumber column as it is unique, not a non nonclustered one. References: https://msdn.microsoft.com/en-us/library/ms190457.aspx

            NEW QUESTION 16
            Note: This question is part of a series of questions that present the same scenario. Each question in this series contains a unique solution. Determine whether the solution meets the stated goals.
            You are developing a new application that uses a stored procedure. The stored procedure inserts thousands of records as a single batch into the Employees table.
            Users report that the application response time has worsened since the stored procedure was updated. You examine disk-related performance counters for the Microsoft SQL Server instance and observe several high values that include a disk performance issue. You examine wait statistics and observe an unusually high WRITELOG value.
            You need to improve the application response time.
            Solution: You replace the stored procedure with a user-defined function. Does the solution meet the goal?

            • A. Yes
            • B. No

            Answer: B

            Explanation: References: https://msdn.microsoft.com/en-us/library/ms345075.aspx

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