70-762 | Microsoft 70-762 Dumps 2019

Exam Code: 70-762 (), Exam Name: Developing SQL Databases (beta), Certification Provider: Microsoft Certifitcation, Free Today! Guaranteed Training- Pass 70-762 Exam.

Also have 70-762 free dumps questions for you:

NEW QUESTION 1
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 questions 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 3-TB database. The database server has 64 CPU cores. You plan to migrate the database to Microsoft Azure SQL Database.
You need to select the service tier for the Azure SQL database. The solution must meet or exceed the current processing capacity.
Solution: You select the Basic service tier. Does this meet the goal?

  • A. Yes
  • B. No

Answer: B

Explanation: 70-762 dumps exhibit
Premium service is required for 3 TB of storage. Single database DTU and storage limits
References: https://docs.microsoft.com/en-us/azure/sql-database/sql-database-service-tiers-dtu

NEW QUESTION 2
You suspect deadlocks on a database.
Which two trace flags in the Microsoft SQL Server error log should you locate? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.

  • A. 1204
  • B. 1211
  • C. 1222
  • D. 2528
  • E. 3205

Answer: AC

Explanation: Trace flag 1204 returns the resources and types of locks participating in a deadlock and also the current command affected.
Trace flag 1222 returns the resources and types of locks that are participating in a deadlock and also the current command affected, in an XML format that does not comply with any XSD schema.
References:
https://docs.microsoft.com/en-us/sql/t-sql/database-console-commands/dbcc-traceon-trace-flags-transact-sql?vie

NEW QUESTION 3
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution. Determine whether the solution meets the stated goals.
You have a table that has a clustered index and a nonclustered index. The indexes use different columns from the table. You have a query named Query1 that uses the nonclustered index.
Users report that Query1 takes a long time to report results. You run Query1 and review the following statistics for an index seek operation:
70-762 dumps exhibit
You need to resolve the performance issue. Solution: You drop the nonclustered index.
Does the solution meet the goal?

  • A. Yes
  • B. No

Answer: B

NEW QUESTION 4
You have two databases with the following settings:
70-762 dumps exhibit
You run the following Transact –SQL statements:
70-762 dumps exhibit
You need to select data from DiskTable and insert the data into MemTable. You must complete the insertion operation into MemTable as an explicit transaction without immediate durability.
Which four Transact-SQL segments should you use? 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.
70-762 dumps exhibit

    Answer:

    Explanation: Box 1: BEGIN TRANSACTION
    Box 2: UPDATE … #Disktable
    Box 3: IF… SELECT INTO …#Disktable Box 4: .. DELAYED_DURABILITY = ON
    The COMMIT syntax is extended so you can force delayed transaction durability. If DELAYED_DURABILITY is DISABLED or FORCED at the database level (see above) this COMMIT option is ignored.
    Syntax:
    COMMIT [ { TRAN | TRANSACTION } ] [ transaction_name | @tran_name_variable ] ] [ WITH ( DELAYED_DURABILITY = { OFF | ON } ) ]
    References:
    https://docs.microsoft.com/en-us/sql/relational-databases/logs/control-transaction-durability?view=sql-server-20

    NEW QUESTION 5
    You manage a database that includes the tables shown in the exhibit (Click the Exhibit button.)
    70-762 dumps exhibit
    You plan to create a DML trigger that reads the value of the LineTotal column for each row in the PurchaseOrderDetail table. The trigger must add the value obtained to the value in the SubTotal column of the PurchaseOrderHeader table.
    You need to organize the list to form the appropriate Transact-SQL statement.
    Which five 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.
    70-762 dumps exhibit

      Answer:

      Explanation: 70-762 dumps exhibit

      NEW QUESTION 6
      Note: This question is part of a series of questions that use the same scenario. For your convenience, the scenario is repeated in each question. Each question presents a different goal and answer choices, but the text of the scenario is exactly the same in each question in this series.
      You have a database that contains the following tables: BlogCategory, BlogEntry, ProductReview, Product, and SalesPerson. The tables were created using the following Transact SQL statements:
      70-762 dumps exhibit
      You must modify the ProductReview Table to meet the following requirements:
      * The table must reference the ProductID column in the Product table
      * Existing records in the ProductReview table must not be validated with the Product table.
      * Deleting records in the Product table must not be allowed if records are referenced by the ProductReview table.
      * Changes to records in the Product table must propagate to the ProductReview table.
      You also have the following database tables: Order, ProductTypes, and SalesHistory, The transact-SQL statements for these tables are not available.
      You must modify the Orders table to meet the following requirements:
      * Create new rows in the table without granting INSERT permissions to the table.
      * Notify the sales person who places an order whether or not the order was completed.
      You must add the following constraints to the SalesHistory table:
      * a constraint on the SaleID column that allows the field to be used as a record identifier
      * a constant that uses the ProductID column to reference the Product column of the ProductTypes table
      * a constraint on the CategoryID column that allows one row with a null value in the column
      * a constraint that limits the SalePrice column to values greater than four
      Finance department users must be able to retrieve data from the SalesHistory table for sales persons where the value of the SalesYTD column is above a certain threshold.
      You plan to create a memory-optimized table named SalesOrder. The table must meet the following requirements:
      * The table must hold 10 million unique sales orders.
      * The table must use checkpoints to minimize I/O operations and must not use transaction logging.
      * Data loss is acceptable.
      Performance for queries against the SalesOrder table that use Where clauses with exact equality operations must be optimized.
      How should you complete the Transact-SQL statements? To answer, select the appropriate Transact-SQL segments in the answer area.
      70-762 dumps exhibit

        Answer:

        Explanation:
        From question: Finance department users must be able to retrieve data from the SalesHistory table for sales persons where the value of the SalesYTD column is above a certain threshold.
        CREATE VIEW (Transact-SQL) creates a virtual table whose contents (columns and rows) are defined by a query. Use this statement to create a view of the data in one or more tables in the database.
        SCHEMABINDING binds the view to the schema of the underlying table or tables. When SCHEMABINDING is specified, the base table or tables cannot be modified in a way that would affect the view definition.
        References: https://msdn.microsoft.com/en-us/library/ms187956.aspx

        NEW QUESTION 7
        Note: This question is part of a series of questions that use the same scenario. For your convenience, the scenario is repeated in each question. Each question presents a different goal and answer choices, but the text of the scenario is exactly the same in each question in this series.
        You have a database named Sales that contains the following database tables: Customer, Order, and Products. The Products table and the Order table are shown in the following diagram.
        70-762 dumps exhibit
        The customer table includes a column that stores the data for the last order that the customer placed.
        You plan to create a table named Leads. The Leads table is expected to contain approximately 20,000 records. Storage requirements for the Leads table must be minimized.
        You need to modify the database design to meet the following requirements:
        * Rows in the Orders table must always have a valid value for the ProductID column.
        * Rows in the Products table must not be deleted if they are part of any rows in the Orders table.
        * All rows in both tables must be unique.
        In the table below, identify the constraint that must be configured for each table. NOTE: Make only one selection in each column.
        70-762 dumps exhibit

          Answer:

          Explanation: A FOREIGN KEY in one table points to a PRIMARY KEY in another table. Here the foreign key constraint is put on the ProductID in the Orders, and points to the ProductID of the Products table.
          With a check constraint on the ProductID we can ensure that the Products table contains only unique rows.
          References:
          http://www.w3schools.com/sql/sql_foreignkey.asp

          NEW QUESTION 8
          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 questions 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 3-TB database. The database server has 64 CPU cores. You plan to migrate the database to Microsoft Azure SQL Database.
          You need to select the service tier for the Azure SQL database. The solution must meet or exceed the current processing capacity.
          Solution: You select the Standard service tier. Does this meet the goal?

          • A. Yes
          • B. No

          Answer: B

          Explanation: Premium service is required for 3 TB of storage. Single database DTU and storage limits
          70-762 dumps exhibit
          References: https://docs.microsoft.com/en-us/azure/sql-database/sql-database-service-tiers-dtu

          NEW QUESTION 9
          You have two database tables. Table1 is a partitioned table and Table 2 is a non-partitioned table.
          Users report that queries take a long time to complete. You monitor queries by using Microsoft SQL Server Profiler. You observe lock escalation for Table1 and Table 2.
          You need to allow escalation of Table1 locks to the partition level and prevent all lock escalation for Table2. Which Transact-SQL statement should you run for each table? To answer, drag the appropriate Transact-SQL statements to the correct tables. Each command 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: Since SQL Server 2008 you can also control how SQL Server performs the Lock Escalation – through the ALTER TABLE statement and the property LOCK_ESCALATION. There are 3 different options available:
            Box 1: Table1, Auto
            The default option is TABLE, means that SQL Server *always* performs the Lock Escalation to the table level –even when the table is partitioned. If you have your table partitioned, and you want to have a Partition Level Lock Escalation (because you have tested your data access pattern, and you don’t cause deadlocks with it), then you can change the option to AUTO. AUTO means that the Lock Escalation is performed to the partition level, if the table is partitioned, and otherwise to the table level.
            Box 2: Table 2, DISABLE
            With the option DISABLE you can completely disable the Lock Escalation for that specific table.
            For partitioned tables, use the LOCK_ESCALATION option of ALTER TABLE to escalate locks to the HoBT level instead of the table or to disable lock escalation.
            References:
            http://www.sqlpassion.at/archive/2014/02/25/lock-escalations/

            NEW QUESTION 10
            You need to build a function that meets the following requirements:
            How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL statements 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: References: https://technet.microsoft.com/en-us/library/ms189294(v=sql.105).aspx

              NEW QUESTION 11
              Note: The 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 question in the series. Information and details provided in a question apply only to that question.
              You have a database named DB1. The database does not use a memory-optimized filegroup. The database contains a table named Table1. The table must support the following workloads:
              70-762 dumps exhibit
              You need to add the most efficient index to support the new OLTP workload, while not deteriorating the existing Reporting query performance.
              What should you do?

              • A. Create a clustered index on the table.
              • B. Create a nonclustered index on the table.
              • C. Create a nonclustered filtered index on the table.
              • D. Create a clusteredcolumnstore index on the table.
              • E. Create a nonclustered columnstore index on the table.
              • F. Create a hash index on the table.

              Answer: C

              Explanation: A filtered index is an optimized nonclustered index, especially suited to cover queries that select from a well-defined subset of data. It uses a filter predicate to index a portion of rows in the table. A well-designed
              filtered index can improve query performance, reduce index maintenance costs, and reduce index storage costs compared with full-table indexes.
              References: https://technet.microsoft.com/en-us/library/cc280372(v=sql.105).aspx

              NEW QUESTION 12
              You are experiencing performance issues with the database server.
              You need to evaluate schema locking issues, plan cache memory pressure points, and backup I/O problems. What should you create?

              • A. a System Monitor report
              • B. a sys.dm_tran_database_transaction dynamic management view query
              • C. an Extended Events session that uses Query Editor
              • D. an Activity Monitor session in Microsoft SQL Management Studio.

              Answer: D

              Explanation: References: https://msdn.microsoft.com/en-us/library/hh212951.aspx

              NEW QUESTION 13
              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. Exhibit
              70-762 dumps exhibit
              You are analyzing the performance of the database environment. You discover that locks that are held for a long period of time as the reports are generated.
              You need to generate the reports more quickly. The database must not use additional resources. What should you do?

              • A. Update the transaction level of the report query session to READPAST.
              • B. Modify the report queries to use the UNION statement to combine the results of two or more queries.
              • C. Set the READ_COMMITTED_SNAPSHOT database option to ON.
              • D. Update the transaction level of the report query session to READ UNCOMMITTED.

              Answer: C

              Explanation: References: https://technet.microsoft.com/en-us/library/ms173763(v=sql.105).aspx

              NEW QUESTION 14
              You are designing a solution for a company that operates retail stores. Each store has a database that tracks sales transactions. You create a summary table in the database at the corporate office. You plan to use the table to record the quantity of each product sold at each store on each day. Managers will use this data to identify reorder levels for products.
              Every evening, stores must transmit sales data to the corporate office. The data must be inserted into the summary table that includes the storeID, Production. Qtysold. Totprodsales, and Datesold columns.
              You need to prevent duplicate rows in the summary table. Each row must uniquely identify the store that sold the product and the total amount sold for that store on a specific date.
              What should you include in your solution?

              • A. Create a column store index.
              • B. Create a check constraint.
              • C. Create a unique constraint.
              • D. Create a rule and bind it to the ProductID column.

              Answer: D

              NEW QUESTION 15
              You are monitoring a Microsoft Azure SQL Database. The database is experiencing high CPU consumption.
              You need to determine which query uses the most cumulative CPU.
              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 one 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.dm_exec_query_stats
                sys.dm_exec_query_stats returns aggregate performance statistics for cached query plans in SQL Server. Box 2: highest_cpu_queries.total_worker_time DESC
                Sort on total_worker_time column
                Example: The following example returns information about the top five queries ranked by average CPU time. This example aggregates the queries according to their query hash so that logically equivalent queries are grouped by their cumulative resource consumption.
                USE AdventureWorks2012; GO
                SELECT TOP 5 query_stats.query_hash AS "Query Hash",
                SUM(query_stats.total_worker_time) / SUM(query_stats.execution_count) AS "Avg CPU Time", MIN(query_stats.statement_text) AS "Statement Text"
                FROM (SELECT QS.*,
                SUBSTRING(ST.text, (QS.statement_start_offset/2) + 1,
                ((CASE statement_end_offset
                WHEN -1 THEN DATALENGTH(ST.text)
                ELSE QS.statement_end_offset END
                - QS.statement_start_offset)/2) + 1) AS statement_text FROM sys.dm_exec_query_stats AS QS
                CROSS APPLY sys.dm_exec_sql_text(QS.sql_handle)as ST) as query_stats GROUP BY query_stats.query_hash
                ORDER BY 2 DESC;
                References: https://msdn.microsoft.com/en-us/library/ms189741.aspx

                NEW QUESTION 16
                You are designing a solution for a company that operates retail stores. Each store has a database that tracks sales transactions. You create a summary table in the database at the corporate office. You plan to use the table to record the quantity of each product sold at each store on each day. Managers will use this data to identify reorder levels for products.
                Every evening, stores must transmit s5les data to the corporate office. The data must be inserted into the summary table that includes the StorelD, ProductID, Qtysold, Totprodsales, and Datesold Columns.
                You need to prevent duplicate rows in the summary table. Each row must uniquely identify the store that sold the product and the total amount sold for that store on a specific date.
                What should you include in your solution?

                • A. Create a unique constraint.
                • B. Create a foreign key constraint to the storeID column in each of the store tables.
                • C. Create a rule and bind it to the storeID column.
                • D. Create a check constraint.

                Answer: B

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