Free Microsoft 070-762 Exam Dumps Questions & Answers

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 os independent of the other questions in this series. Information and details provided in a question apply only to that question.
You have a database named DB1. There is no memory-optimized filegroup in the database.
You run the following query:

The following image displays the execution plan the query optimizer generates for this query:

Users frequently run the same query with different values for the local variable @lastName. The table named Person is persisted on disk.
You need to create an index on the Person.Person table that meets the following requirements:
- All users must be able to benefit from the index.
- FirstName must be added to the index as an included column.
What should you do?

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

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.

Correct 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

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:

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.

Correct 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

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:

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.
You need to create an object that allows finance users to be able to retrieve the required data. The object must not have a negative performance impact.
How should you complete the Transact-SQL statements? To answer, select the appropriate Transact-SQL segments in the answer area.

Correct Answer:

Explanation

A user defined function can return a table, which can be produces by a SELECT statement.
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.
Incorrect:
Not VIEW: The RETURN clause is not used when you create a view.
References:
https://docs.microsoft.com/en-us/sql/t-sql/statements/create-function-transact-sql?view=sql-server-2017

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