Microsoft 70-461 Exam Questions

QUESTION NO: 8

Your database contains a table named Purchases. The table includes a DATETIME column named
PurchaseTime that stores the date and time each purchase is made. There is a non- clustered index on the
PurchaseTime column.
The business team wants a report that displays the total number of purchases made on the current day.
You need to write a query that will return the correct results in the most efficient manner.
Which Transact-SQL query should you use?

A. SELECT COUNT(*)
FROM Purchases
WHERE PurchaseTime = CONVERT(DATE, GETDATE())
B. SELECT COUNT(*)
FROM Purchases
WHERE PurchaseTime = GETDATE()
C. SELECT COUNT(*)
FROM Purchases
WHERE CONVERT(VARCHAR, PurchaseTime, 112) = CONVERT(VARCHAR, GETDATE(), 112)
D. SELECT COUNT(*)
FROM Purchases
WHERE PurchaseTime >= CONVERT(DATE, GETDATE())
AND PurchaseTime < DATEADD(DAY, 1, CONVERT(DATE, GETDATE()))

Answer: D

Section: (none)
Explanation

Explanation/Reference:
Explanation:
Two answers will return the correct results (the "WHERE CONVERT..." and "WHERE ... AND ... "answers).
The correct answer for Microsoft would be the answer that is most "efficient". Anybody have a clue as to
which is most efficient? In the execution plan, the one that I've selected as the correct answer is the query
with the shortest duration. Also, the query answer with "WHERE CONVERT..." threw warnings in the
execution plan...something about affecting CardinalityEstimate and SeekPlan.
I also found this article, which leads me to believe that I have the correct answer:
http://technet.microsoft.com/en-us/library/ms181034.aspx

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Microsoft begins To Publicly Launch Of Window 10 Share Points

Microsoft today launched a website dedicated to keeping track of Windows 10 Release Notes. For more features, improvements and changes the company has grown, now you can only visit the historic upgrade Windows 10.

"After listening to comments on the level of disclosure for Windows 10 updates, we decided to implement a new communication system, which updates the operating system," a Microsoft spokesperson told VentureBeat. "We now present the historical update Windows 10, a center for the release notes that accompany each update and serve as a historical record of notes from the previous version."

The "feedback" that Microsoft refers to fund amounts to complaints from users of Windows 10 who wanted to know more about what the company pushed to their devices. In the future, each updating of the list is a summary of significant developments with links to product details.

Because Windows 10 updates are cumulative, you may need to scroll down a bit to find exactly when something has changed. For now, Microsoft lists only two changes (also released today as part of the monthly Patch Tuesday cycle of Microsoft), as there are two windows 10 branches:

The first part of July launch (build 10240) and updated in November (build 10586) branch. We have introduced new features of the operating system in November after seeing, or "flighted", insiders with windows between July and November. Most customers have moved automatically from July to November Rama Rama. Windows 10 Professional, Enterprise and Education customers publishers may postpone updating the branch in November and stay in the SET's role in July - up to 10 years for some corporate customers.

Windows 10 is a service. As we wrote in our deep dive into how Microsoft is still working on Windows 10, Windows are started then new construction, even if the operating system launched in July 2015.

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How To Pass 70-461 Querying Microsoft SQL Server 2012

MCSA Querying Microsoft SQL Server 2012 Exam 70 461: Introduction

70-461 Question Answer:

You work as a database developer at ABC.com. ABC.com has a SQL Server 2012 database named SalesDB that has a table named WeeklySales. The WeeklySales table records the sales amount for each of ABC.coms 20 sales representitives. You need to write a Transact-SQL query that ranks the sales representatives by the average sales amount for the past year. You want the sales representatives with the same average sales amount to have the same rank with the subsequent rank being skipped. Which ranking function should you use?

A. The RANK( ) OVER function.
B. The NTILE( ) OVER function
C. The DENSE_RANK( ) OVER function
D. The ROW_NUMBER( ) OVER function
E. The FORMAT function.

Answer: C

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Microsoft Bought The British Compan Swiftkey AI

Artificial intelligence firm UK SwiftKey was acquired by Microsoft, the company confirmed.

The Financial Times reports that the deal is valued at $ 250 million (£ 174 million).

SwiftKey is known for its predictive keyboard, which is installed on millions of smartphones.

The company said it was a "step" in its history.

"Our mission is to strengthen the interaction between people and technology. We believe this is a perfect match, and we believe part of Microsoft is just next leg of our journey," said the founder of SwiftKey Jon Reynolds and Ben Medlock in a blog.

The company is the latest farm UK artificial intelligence (AI) to be bought by a giant US technology.

Deepmind - which started at the University of Oxford - was bought by Google in 2014 for £ 400. Another firm, VocalIQ, was recently acquired by Apple.

And the popular smartphone app, SwiftKey is known for being the source of computer programs in the wheelchair Professor Stephen Hawking.

The agreement promotes the new Microsoft mobile strategy, led by CEO Satya Nadella.

Instead of focusing on the computer - where the company has a small market share with its range of Windows Phone - the company is seeking to develop a range of productivity software for use on any device.

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