【2019年8月】OCP 071认证考试最新版本的考试原题-第21题

choose two

In the PROMOTIONS table, the PROMO_BEGTN_DATE columm is of datatype DATE and the default date format is DD-MON-RR.

Which two statements are true about expressions using PROMO_BEGIN_DATE contained in a queny?

A) TONUMBER(PROMO BEGIN_DATE) - 5 will return number

B) TO_DATE(PROMO_BEGIN_DATE * 5) will return a date

C) PROMO_BEGIN_DATE - SYSDATE will return a number.

D) PROMO_BEGIN_DATE - 5 will return a date.

E) PROMO_BEGIN_DATE - SYSDATE will return an error.

Answer：CD

(解析：这道题考的还比较有意义，AAnswer：错是因为日期型的不能转换为 number;日期不能乘除某个数，所以 BAnswer：错;但是日期型的是可以进行加减。)

原文地址：https://blog.51cto.com/13854012/2447492

时间： 2024-10-07 21:45:38

【2019年8月】OCP 071认证考试最新版本的考试原题-第21题的相关文章

【2019年8月】OCP 071认证考试最新版本的考试原题-第16题

Choose two. Examine this partial command: CREATE TABLE cust ( cust_id NUMBER(2), credit_ limit NUMBER(10) ) ORGANIZATION EXTERNAL Which two clauses are required for this command to execute successfully? A) the DEFAULT DIRECTORY clause B) the REJECT L

【2019年8月】OCP 071认证考试最新版本的考试原题-第28题

choose two The ORDERS table has a column ORDER_DATE of date type DATE The default display format for a date is DD-MON-RR Which two WHERE conditions demonstrate the correct usage of conversion functions? A) WHERE ordet_date > TO_CRAR(ADD_MONTHS(SYSDAT

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第2题

choose three Which three are true about the CREATE TABLE command? A) It can include the CREATE...INDEX statement for creating an index to enforce the primary key constraint. B) The owner of the table should have space quota available on the tablespac

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第3题

choose two The CUSTOMERS table has a CUST_CREDT_LIMIT column of date type number. Which two queries execute successtully? A) SELECT TO_CHAR(NVL(cust_credit_limit * .15,'Not Available')) FROM customers; B) SELECT NVL2(cust_credit_limit * .15,'Not Avai

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第5题

choose the best answer The CUSTOMERS table has a CUST_LAST_NAME column of data type VARCHAR2. The table has two rows whose COST_LAST_MANE values are Anderson and Ausson. Which query produces output for CUST_LAST_SAME containing Order for the first ro

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第6题

choose three Which three statements are true about indexes and their administration in an Orade database? A) An INVISIBLE index is not maintained when Data Manipulation Language (DML) is performed on its underlying table. B) An index can be created a

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第7题

Choose three Which three are true about granting object privileges on tables, views, and sequences? A) UPDATE can be granted only on tables and views. B) DELETE can be granted on tables, views, and sequences. C) REFERENCES can be granted only on tabl

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第9题

Choose three Which three statements are true about views in an Orade batabase? A) A SELECT statement cannot contain a where clause when querying a view contaning a WHERE clause in its defining query B) Rows inserted into a table using a view are reta

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第10题

Choose two Which two statements are true about Oracle synonyms? A) A synonym can have a synonym. B) All private synonym names must be unique in the database. C) Any user can create a PUBLIC synonym. D) A synonym can be created on an object in a packa

【2019年8月版本】OCP 071认证考试最新版本的考试原题-第11题

Choose two. Which two statements are true about a self join? A) The join key column must have an index. B) It can be a left outer join. C) It must be a full outer join. D) It can be an inner join. E) It must be an equie join. Answer:BD (自连接其实跟两张表的连接一