Microsoft Developing SQL Databases 70-762 Exam Practice Test

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 modify the design of the Orders table.

What should you create?

You need to create a view that can be indexed. You write the following statement.

What should you add at line 02?

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.

The Account table was created by using the following Transact-SQL statement:

There are more than 1 billion records in the Account table. The AccountNuwber 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:

SELECT ProductCode, SUM(Balance) AS TotalSUH FROM Account WHERE ProductCode <> 'CD' GROUP 8Y ProductCode; SELECT AccountNupber, Balance FROM Account WHERE ProductCode - 'CD";

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 statements:

Does the solution meet the goal?

You have a nonpartitioned table that has a single dimension. The table is named dim. Products.Projections.

The table is queried frequently by several line-of-business applications. The data is updated frequently throughout the day by two processes.

Users report that when they query data from dim.Products.Projections, the responses are slower than expected. The issue occurs when a large number of rows are being updated.

You need to prevent the updates from slowing down the queries.

What should you do?

You are designing a stored procedure for a database named obi.

The following requirements must be met during the entire execution of the stored procedure:

*The stored procedure must only read changes that are persisted to the database.

*select statements within the stored procedure should only show changes to the data that are made by the stored procedure

You need to configure the transaction isolation level for the stored procedure.

Which Transact-SQL statement or statements should you run?

A)

B)

C)

D)

You run the following Transact-SQL statement:

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

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:

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:

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?