大学四六级准考证打印时间
关于英语四六级你知道多少?大学英语考试每年有两次考试。考试时间通常情况下为每年6月份、12月份的第三个星期六。今天小编在这给大家整理了一些大学四六级准考证打印时间最新，我们一起来看看吧!大学四六级准考证打印时间英语四六级准考证打印时间：2022年9月12日9：00开始(打印时间考试院已...
2024-01-10
女士摩托考证怎么考(女士摩托车证怎么考)
一．摩托车驾照怎么考1．可以按照如下步骤进行：摩托车考试准备材料摩托车驾照考试内容：科目一和科目四：摩托车考试的科目一和科目四基本和C1驾驶证是相同的，同样都是100分，90分及格。2．基本没问题科目二和科目三：考试内容比C1驾驶证简单，包括绕桩、单边桥、坡起，他们是不分开的，两...
2024-01-10
被考证机构骗怎么维权？
被教育机构骗了钱怎么处理培训机构诈骗可以通过以下方式维权：培训机构归教育局管辖，所以首先可以向教育局投诉其违规办学教育局会进行相应的处理。受害方还可以搜集相关的证据报警处理，如有培训机构印章的合同、付款的凭证，包括发票或收据及刷卡的单据等。或者直接向法院起诉，由法...
2024-01-10
设定考试教室布局50个，自动排位，须前后左右都不是本班学生，这个问题的解决思路是啥？
现在就是这个前后左右不是本班学生要如何实现，有没有好的解决思路。回答：建议参考【八皇后问题】回溯算法。...
2024-01-10
【2019年8月版】OCP071认证考试原题第39题
Choose twoExanine the desatption of the BOOKS_TRANSACTIONS tableName Null? Type----------------------------------------------------------------------------------------------TRANSACTION_ID NOT NULL VARCHAR2(6)TRANSACTION_TYPE VARCHAR...
2024-01-10
【2019年8月版】OCP071认证考试原题第37题
Choose the best answerExamine the description of the PRODUCT_INFORMATION table:Name NULL? Type------------------------------------------------------------------------PROD_ID NOT NULL NUMBER(2)PROD_NANE VARCRAR2 (10)LIST_PRICE ...
2024-01-10
【2019年8月版】OCP071认证考试原题第33题
Choose three.Which three statements are true about a self join?A) It must be an inner join.B) It can be an outer join.C) The ON clause must be used.D) It must be an equijoin.E) The query must use twodifferent aliases for the table.F) The ON clause can be u...
2024-01-10
【2019年8月版】OCP071认证考试原题第42题
Choose twoExamine this SQL statement:DELETE FROM employees eWHERE EXISTS(SELECT "dummy"FROM emp_historyWHERE employee_id = e.employee_id)Which two are true?A) The subquery is executed for every row in the EMPLOYEES table.B) The subquery is not a correlated...
2024-01-10
【2019年8月版】OCP071认证考试原题第40题
Choose two.Which two statements are true about single row functions?A) CONCAT : can be used to combine any number of valuesB) MOD : returns the quotient of a division operationC) CEIL : can be used for positive and negative numbersD) FLOOR : returns the sm...
2024-01-10
【2019年8月版】OCP071认证考试原题第38题
choose two.You need to calculate the number of days from 1st January 2019 until today.Dates are stored in the default format of DD-MON-RR.Which two queries give the required output?A) SELECT SYSDATE - TO_DATE (" 01-JANUARY-2019" ) FROM DUAL;B) SELECT TO_DA...
2024-01-10
【2019年8月版】OCP071认证考试原题第36题
Choose threeWhich three statements are true about sequences in a single instance Orade database?A) A sequence"s unallocated cached values are lost if the instance shuts down.B) Two or more tables cannot have keys generated from the same sequence.C) A seque...
2024-01-10
【2019年8月版】OCP071认证考试原题第34题
Choose two.Which two statements are true about the results of using the INTERSECT operator in compound queres?A) Reversing the order of the intersected tables can sometimes affect the output.B) Column names in each SELECT in the compound query can be dffer...
2024-01-10
【2019年8月版】OCP071认证考试原题第41题
choose threeThe ORDERS table has a primary key constraint on the ORDER_ID column.The ORDER_ITEMS table has a foreign key constraint on the ORDER_ID column,referencing the primary key of the ORDERS table.The constraint is defined with on DELETE CASCADE.Ther...
2024-01-10
【2019年8月版】OCP071认证考试原题第35题
choose twoWhich two statenents are tue about the COUNT function?A) It can only be used for NUMBER data types.B) COUNT (DISTINCT inv_amt) returns the number of rows excluding rows containing dupicates and NULLs in the INV_AMT columnC) COUNT(*) returns the n...
2024-01-10
