070-762 무료 덤프문제 온라인 액세스

You have a database that contains three encrypted store procedures named dbo.Proc1, dbo.Proc2 and dbo.Proc3. The stored procedures include INSERT, UPDATE, DELETE and BACKUP DATABASE statements.
You have the following requirements:
* You must run all the stored procedures within the same transaction.
* You must automatically start a transaction when stored procedures include DML statements.
* You must not automatically start a transaction when stored procedures include DDL statements.
You need to run all three stored procedures.
Which four Transact-SQL segments should you use to develop the solution? To answer, move the appropriate Transact-SQL segments to the answer area and arrange then in the correct order.

정답:

Explanation

Note:
Implicit transaction mode remains in effect until the connection executes a SET IMPLICIT_TRANSACTIONS OFF statement, which returns the connection to autocommit mode. In autocommit mode, all individual statements are committed if they complete successfully.
When a connection is in implicit transaction mode and the connection is not currently in a transaction, executing any of the following statements starts a transaction:
Note 2: XACT_STATE returns the following values.
1 The current request has an active user transaction. The request can perform any actions, including writing data and committing the transaction. The transaction is committable.
-1 The current request has an active user transaction, but an error has occurred that has caused the transaction to be classified as an uncommittable transaction. The transaction is uncommittable and should be rolled back.
0 There is no active user transaction for the current request. A commit or rollback operation would generate an error.
References:
https://technet.microsoft.com/en-us/library/ms187807(v=sql.105).aspx
https://technet.microsoft.com/en-us/library/ms189797(v=sql.110).aspx

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 Activity Monitor session in Microsoft SQL Management Studio.
• D.an Extended Events session that uses Query Editor

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

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.

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 create triggers that meet the following requirements:
* Optimize the performance and data integrity of the tables.
* Provide a custom error if a user attempts to create an order for a customer that does not exist.
* In the Customers table, update the value for the last order placed.
* Complete all actions as part of the original transaction.
In the table below, identify the trigger types that meet the requirements.
NOTE: Make only selection in each column. Each correct selection is worth one point.

정답:

Explanation

INSTEAD OF INSERT triggers can be defined on a view or table to replace the standard action of the INSERT statement.
AFTER specifies that the DML trigger is fired only when all operations specified in the triggering SQL statement have executed successfully.
References: https://technet.microsoft.com/en-us/library/ms175089(v=sql.105).aspx

You have two databases with the following settings:

You run the following Transact -SQL statements:

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.

정답:

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