70-464 무료 덤프문제 온라인 액세스

You have a database named database1. Each table in database1 has one index per column.
Users often report that creating items takes a long time.
You need to perform the following maintenance tasks:
What should you use?
To answer, drag the appropriate function to the correct management task in the answer area. (Answer choices may be used once, more than once, or not at all.)

정답:

Explanation:
Box 1: sys.dm_db_index_usage_stats
sys.dm_db_index_usage_stats shows you how many times the index was used for user queries. It returns counts of different types of index operations and the time each type of operation was last performed in SQL Server.
Box 2: sys.dm_db_missing_index_details
sys.dm_db_missing_index_details returns detailed information about a missing index; for example, it returns the name and identifier of the table where the index is missing, and the columns and column types that should make up the missing index.
References: https://docs.microsoft.com/en-us/sql/relational-databases/system-dynamic-management-views/sys-dm-db-index-usage-stats-transact-sql
https://docs.microsoft.com/en-us/sql/relational-databases/system-catalog-views/sys-indexes-transact-sql
https://technet.microsoft.com/en-us/library/ms345524(v=sql.105).aspx

You need to redesign the system to meet the scalability requirements of the application.
Develop the solution by selecting and arranging the required code blocks in the correct order.
You may not need all of the code blocks.

정답:

Explanation:
Note:
* MEMORY_OPTIMIZED_DATA
First create a memory-optimized data filegroup and add a container to the filegroup.
Then create a memory-optimized table.
* You must specify a value for the BUCKET_COUNT parameter when you create the memory-optimized table. In most cases the bucket count should be between 1 and 2 times the number of distinct values in the index key.
* Example:
-- create a durable (data will be persisted) memory-optimized table
-- two of the columns are indexed
CREATE TABLE dbo.ShoppingCart (
ShoppingCartId INT IDENTITY(1,1) PRIMARY KEY NONCLUSTERED,
UserId INT NOT NULL INDEX ix_UserId NONCLUSTERED HASH WITH (BUCKET_COUNT=1000000), CreatedDate DATETIME2 NOT NULL, TotalPrice MONEY ) WITH (MEMORY_OPTIMIZED=ON) GO

You have a database named Database1. Database1 has two stored procedures named Proc1 and Proc2 and a table named Table1. Table1 has millions of rows.
Proc1 updates data in Table1. Proc2 reads data from Table1.
You discover that when Proc1 is executed to update more than 4,000 rows, Proc2 is blocked. The block affects all rows, including those that are not being updated by Proc1.
You need to ensure that when Proc1 is executing, Proc2 can access the data in Table1 that Proc1 is not updating.
What should you change Proc1 to do?
More than one answer choice may achieve the goal. Select the BEST answer.

• A.Use the ROWLOCK table hint.
• B.Update less than 4,000 rows simultaneously.
• C.Wait for Proc2 to complete.
• D.Use the PAGLOCK table hint.

You have a SQL Server 2012 database named Database1.
You execute the following code:

You insert 3 million rows into Sales.
You need to reduce the amount of time it takes to execute Proc1.
What should you do?

• A.Option C
• B.Option D
• C.Option B
• D.Option A

You need to identify which long running transactions use an index.
Which dynamic management view should you use?

• A.sys.dm_exec_query_optimizer_info
• B.sys.dm_exec_sessions
• C.sys.dm_exec_connections
• D.sys.dm_exec_query_stats