IBM认证考试

Which of the following is a characteristic of a sequence?()A、A sequence will never generate duplicate valuesB、The MAXVALUE of a sequence can be equal to the MINVALUEC、It is not possible to create a sequence that generates a constant since the INCREMENT va

题目

Which of the following is a characteristic of a sequence?()

  • A、A sequence will never generate duplicate values
  • B、The MAXVALUE of a sequence can be equal to the MINVALUE
  • C、It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero
  • D、When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundaries
参考答案和解析
正确答案:B
如果没有搜索结果,请直接 联系老师 获取答案。
相似问题和答案

第1题:

What does the following function return?

char foo(void)

{

unsigned int a = 6;

iht b = -20;

char c;

(a+b > 6) ? (c=1): (c=0);

return c;

}


正确答案:
 

第2题:

Given the following requirements:Create a table named TESTTAB, which has an identity column named ACTIVITYNO. Define the identity column to generate the values for the column by default. Start the values at 10 and increment by 10. Make the identity column unique. Which of the following CREATE statements will successfully create this table?()

A.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 10 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))

B.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED ALWAYS AS IDENTITY (START WITH 1 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTNO))

C.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 1), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))

D.CREATE TABLE TESTTAB (ACTIVITYNO SMALLINT NOT NULL GENERATED BY DEFAULT AS IDENTITY (START WITH 10 INCREMENT BY 10), ACTKWD CHAR(6) NOT NULL, ACTDESC VARCHAR(20) NOT NULL, UNIQUE(ACTIVITYNO))


参考答案:D

第3题:

Which of the following is not an AVL tree?

A.

B.

C.

D.


正确答案:B

第4题:

Which expressions will evaluate to true if preceded by the following code?()   String a = "hello";   String b = new String(a);   String c = a;   char[] d = { ’h’, ’e’, ’l’, ’l’, ’o’ };  

  • A、(a == "Hello")
  • B、(a == b)
  • C、(a == c)
  • D、a.equals(b)
  • E、a.equals(d)

正确答案:C,D

第5题:

Which of the following phonetic symbol is not right?


答案:D
解析:

第6题:

A conversion operator which converts the current String instance into raw C-style. string of

type const char*.


正确答案:
 

第7题:

Which of the following sounds is a voiced bilabial stop?


答案:D
解析:
考查辅音的发音特征。[b]是带声的、双唇音和爆破音。

第8题:

Which of the following would be affected by setting NLS_LENGTH_SEMANTICS=CHAR?()

A. All objects in the database

B. Tables owned by SYS and SYSTEM

C. Data dictionary tables

D. NCHAR columns

E. CHAR columns


参考答案:E

第9题:

Which two valid declarations of a char? ()

  • A、 Char ch = “a”;
  • B、 Char ch = ‘“‘ ‘;
  • C、 Char ch = ‘cafe‘;
  • D、 Char ch = “cafe”;
  • E、 Char ch = ‘“ucafe‘;
  • F、 Char ch = ‘“u10100‘;
  • G、 Char ch = (char) true;

正确答案:B,E

第10题:

Which of the following is a performance optimization technology?()

  • A、QoS
  • B、Trunking
  • C、Spanning
  • D、VoIP

正确答案:A

更多相关问题