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Which statement adds a constraint that ensures the CUSTOMER_NAME column of the CUSTOMERS table holds a value?（）
A . ALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;
B . ALTER TABLE customers MODIFY CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;
C . ALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn NOT NULL;
D . ALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn IS NOT NULL;
E . ALTER TABLE customers MODIFY name CONSTRAINT cust_name_nn NOT NULL;
F . ALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name NOT NULL
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在Oracle中，你以SYSDBA登录，CUSTOMER表位于Mary用户方案中，下面哪条语句为数据库中的所有用户创建CUSTOMER表的同义词（）。
A、CREATE PUBLIC SYNONYM cust ON mary.customer;
B、CREATE PUBLIC SYNONYM cust FOR mary.customer;
C、CREATE SYNONYM cust ON mary.customer FOR PUBLIC;
D、不能创建CUSTOMER的公用同义词。
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英译中：Customized logistics
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Given the JSP code： 10.<html> 11.<body> 12.<jsp：useBean id=’customer’ class=’com.example.Customer’ /> 13.Hello， ${customer.title} ${customer.lastName}， welcome 14.to Squeaky Beans， Inc. 15.</body>16. </html> Which three types of JSP code are used？（）
A . Java code
B . Template text
C . Scripting code
D . Standard action
E . Expression language
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客户终生价值（Customer Lifetime Value）
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由以下语句创建的表有种子字段，请正确组合插入语句，可不分先后。CREATE TABLE Customer（id int IDENTITY PRIMARY KEY，Customer varchar（40））（）
A . INSERT INTO Customer
B . SET IDENTITY_INSERT Customer ON
C . VALUES（3，’garden shovel’）
D . （id，Customer）
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在 Ethernet 0 上启用 Custom-list Queueing ，并用 Custom-list Queueing 规则库中的第 10 组规则来定义该 接口上 Custom-list Queueing 的行为，应该配置（）命令。
A . [Quidway-Ethernet0] qos cq cql 10
B . [Quidway-Ethernet0] qos cql 10
C . [Quidway-Ethernet0] access-group 10
D . [Quidway-Ethernet0] acl 10
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C2C Customer to Customer
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What tool is used to register a customer service representative with the customer care feature？（）
A . WebSphere Commerce Accelerator
B . SameTime Administrator
C . WebSphere Commerce Configuration Manager
D . WebSphere Commerce Administration Console
E . WebSphere Commerce Organization Administration Console
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The CUSTOMERS table has these columns:
https://assets.asklib.com/images/image2/2018080116294948484.jpg
The CUSTOMER_ID column is the primary key for the table.Which two statements find the number of customers? （）
A . SELECT TOTAL(*) FROM customers;
B . SELECT COUNT(*) FROM customers;
C . SELECT TOTAL(customer_id) FROM customers;
D . SELECT COUNT(customer_id) FROM customers;
E . SELECT COUNT(customers) FROM customers;
F . SELECT TOTAL(customer_name) FROM customer
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You are helping the customer customer configure anthentication，a new asyncOS upgradebecomes available，what should you do？（）
A . avoid mentioning the upgrade to the customer
B . schedule a convenient time to upgrade again， backing up the configuration before and after theupgrade
C . contact customer support and ask them to run the upgrade for you
D . immediately show the customer how to run the CLI command upgrade
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If A customers needed to load-balance across multiple data center. which Cisco product would the customer consider?（）
A . ACE Global Site Selector
B . Site Balancer
C . ISR Wide Area Acceleration Server
D . Nexus Site Balancer
E . ASR Virtual Balanced Network
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“We cannot be too nice to our customers,” means we cannot be nice to our customers.
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Customs clearance agent acts on behalf of the customs.
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BookStore数据库中有客户表Customer(CustomerCode, Name, Sex, Hometown, Email, Telephone, LoginDate, Password)查询Customer表中所有客户的信息，要求显示CustomerCode、Name、Hometown和Telephone字段信息。SQL语句：SELECT _________ FROM Customer
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What is the customer's name？
A．Aldridge
B．Altridge
C．Alldrige
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Falling sales and rising overheads have obliged the company to review each customer's_____limit.
A．credit
B．currency
C．check
D．certificate
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Customer:________Waiter: I'm sorry. Didn't you order fried shrimp （虾子) ？ Customer: I ord
Customer:________Waiter: I'm sorry. Didn't you order fried shrimp (虾子) ？ Customer: I ordered fried chicken. Waiter: Oh, all I heard was fried shrimp. Let me have kitchen redo this for you.
A．Sorry, this isn't my dish.
B．Excuse me, this isn't what I paid for.
C．Sorry, this isn't my order.
D．Excuse me, this isn't what I ordered.
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A “ customs agent ” means the same as a “ customs broker ”.（)
是
否
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翻译Having patience with your customers and with yourself will go a long way in winning over hostile customers.
A. 对顾客和对自己有耐心将走很长的路才能赢得生气的顾客对你工作的支持。
B. 对顾客和对自己有耐心将在赢得生气的顾客对你工作的支持方面大有帮助。
C. 对顾客和对自己有耐心将会很难赢得生气的顾客对你工作的支持。
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All transactions are strictly ______ , and we never sell, rent or trade any customer's name
A．confident
B．consecutive
C．confidential
D．consequential
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Customers1与Customers2表结构一致，以下SQL语句正确的有（)。
A、SELECT cust_name FROM Customers1 UNION SELECT cust_name FROM Customers2
B、SELECT cust_contact FROM Customers1 UNION SELECT cust_name, cust_contact FROM Customers2
C、SELECT * FROM Customers1 UNION SELECT * FROM Customers2
D、SELECT cust_name FROM Customers1 UNION SELECT * FROM Customers2
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Wht is the text minlybout Customer Service in SNCF．B．Customer service iWht is the text minlybout Customer Service in SNCF． B．Customer service in Swiss Rilwys． C．The writer’s bd impression of Internet tickets． D．The writer’s experience in buying French ril tickets．
A．Customer Service in SNCF
B．Customer service in Swiss Railways．
C．The writer’s bad impression of Internet tickets．
D．The writer’s experience in buying French rail tickets．
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Values of attribute Customer_ID in table BORROW（Customer_ID, Loan_no) must be the values o
Values of attribute Customer_ID in table BORROW(Customer_ID, Loan_no) must be the values of Customer_ID that have already existed in table CUSTOMER(Customer_ID, Customer_Name, Address), this constraint is called :
A、Entity integrity
B、Referential integrity
C、Check constraint
D、User defined constraint
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假设需要为表customer添加主键约束，主键列为customer__id，可以使用如下__方式（）
A．lter table CUSTOMER ADD PK_CUSTOMER PRIMARY KEY （CUSTOMER_ID）
B．lter table CUSTOMER ADD PRIMARY KEY （CUSTOMER_ID）
C．lter table CUSTOMER ADD CONSTRAINT PK_CUSTOMER （CUSTOMER_ID）
D．lter table CUSTOMER ADD CONSTRAINT PK_CUSTOMER PRIMARY KEY （CUSTOMER_ID）
