You are responsible for a data warehouse application that uses records from an external table to update one of the dimension tables periodically. The records in the external table may contain data for new rows in the dimension table， or for updates to its

题目

You are responsible for a data warehouse application that uses records from an external table to update one of the dimension tables periodically. The records in the external table may contain data for new rows in the dimension table， or for updates to its existing rows. Which type of SQL command would you use to transfer the data from the external table to the dimension table as efficiently as possible？（）

A、MERGE
B、SELECT …CROSS JOIN
C、INSERT ALL …SELECT
D、CREATE VIEW …CONSTRAINT

更多“You are responsible&”相关问题

第1题

The following hints may help you stay energized, or at least()until you can make the time for rest.A、 get you goingB、 get you goC、 get you went

点击查看答案
第2题

______ that dress when I first saw you at the station?A、Were you wearingB、Have you wornC、Did you wearD、Do you wear

点击查看答案
第3题

听力原文：If you lose your bank notes, the chance for you to get them back is not high.(10)A．If you lose your bank notes, you will not get them back.B．If you lose your bank notes, you will get compensation.C．If you lose your bank notes, you can get them back soon.D．If you lose your bank notes, most probably, you will not get them back.

点击查看答案
第4题

You have a computer that runs Windows Vista.You connect to your company’s network by using a virtual private network (VPN) connection. You notice that when you establish the VPN connection, you are unable to access Internet Web sites. When you disconnect the VPN connection, you can access Internet Web sites.You need to access Internet Web sites while you are connected to the VPN connection.What should you do?（）A.AB.BC.CD.D

点击查看答案
第5题

共用题干 Knowing Your Real Personality from Sleeping Positions Everyone has got two personalities—the one that is shown to the world and the other that is secret and real. You don't show your secret personality when you're awake because you, can control yourself,but when you're asleep,your sleeping position shows the real you .In a normal night,of course,you often change your sleeping positions .The important position that best shows your se- cret personality is the one that you go to sleep. If you go to sleep on your back,you're a very open person .You normally trust people and you are easily influenced by new ideas.You don't like to make people unhappy,so you never ex- press your real feelings.You're quite shy and you aren't very confident. If you sleep on your stomach,you are a person who likes to keep secrets.You worry a lot and you're always easily becoming sad.You never want to change your ideas,but you are satisfied with your life the way it is .You usually live for today not for tomorrow. If you sleep on curled up,you are probably a very nervous person.You have a low opinion of yourself and often protect yourself from being hurt,so you are very defensive .You're shy and you don't usually like meeting people.You like to be on your own. If you sleep on your side,you have usually got a well-balanced personality.You know your strengths and weaknesses.You're usually careful. You have a confident personality.You sometimes feel worried,but you don't often get unhappy .You always say what you think,even if it makes people angry. When does the sleeping position best show your secret personality?A: In the daytime.B: At the beginning of sleep.C: At night.D: During the deep sleep.

点击查看答案
第6题

共用题干 Knowing Your Real Personality from Sleeping Positions Everyone has got two personalities—the one that is shown to the world and the other that is secret and real. You don't show your secret personality when you're awake because you, can control yourself,but when you're asleep,your sleeping position shows the real you .In a normal night,of course,you often change your sleeping positions .The important position that best shows your se- cret personality is the one that you go to sleep. If you go to sleep on your back,you're a very open person .You normally trust people and you are easily influenced by new ideas.You don't like to make people unhappy,so you never ex- press your real feelings.You're quite shy and you aren't very confident. If you sleep on your stomach,you are a person who likes to keep secrets.You worry a lot and you're always easily becoming sad.You never want to change your ideas,but you are satisfied with your life the way it is .You usually live for today not for tomorrow. If you sleep on curled up,you are probably a very nervous person.You have a low opinion of yourself and often protect yourself from being hurt,so you are very defensive .You're shy and you don't usually like meeting people.You like to be on your own. If you sleep on your side,you have usually got a well-balanced personality.You know your strengths and weaknesses.You're usually careful. You have a confident personality.You sometimes feel worried,but you don't often get unhappy .You always say what you think,even if it makes people angry.What does the passage tell us?A: Sleeping on your side is the best way of sleeping.B: Changing positions will cause sleeping problems.C:.Sleeping positions show people's secret personalities. D:.Enough sleep makes people look better and healthier.

点击查看答案
第7题

共用题干 Knowing Your Real Personality from Sleeping Positions Everyone has got two personalities—the one that is shown to the world and the other that is secret and real. You don't show your secret personality when you're awake because you, can control yourself,but when you're asleep,your sleeping position shows the real you .In a normal night,of course,you often change your sleeping positions .The important position that best shows your se- cret personality is the one that you go to sleep. If you go to sleep on your back,you're a very open person .You normally trust people and you are easily influenced by new ideas.You don't like to make people unhappy,so you never ex- press your real feelings.You're quite shy and you aren't very confident. If you sleep on your stomach,you are a person who likes to keep secrets.You worry a lot and you're always easily becoming sad.You never want to change your ideas,but you are satisfied with your life the way it is .You usually live for today not for tomorrow. If you sleep on curled up,you are probably a very nervous person.You have a low opinion of yourself and often protect yourself from being hurt,so you are very defensive .You're shy and you don't usually like meeting people.You like to be on your own. If you sleep on your side,you have usually got a well-balanced personality.You know your strengths and weaknesses.You're usually careful. You have a confident personality.You sometimes feel worried,but you don't often get unhappy .You always say what you think,even if it makes people angry.You may find the passage in_______.A: a science magazineB: a guide bookC: a sports newspaperD: a story book

点击查看答案

You are responsible&

题目

更多“You are responsible&”相关问题

第1题

第2题

第3题

第4题

第5题

第6题

第7题

相关内容