Oracle Placement Paper 14

Oracle Paper 45 questions 45 minutes.

15 java
15 SQL and PL/SQL
15 C (including data structures).

A little bit tough.
some of the questions i remembered are

1. question on bubble sore
2. quick sort complexity
3. heap sort SPACE complexity.

4. char *p = "Oracle India";
p[5] == 'l' ? printf("Orcle") : printf("India")

5. main()
{
int i=5;
recursive(i);
}
recursive(int u)
{
if(u > 0 )
recursive(u-1);
printf("%d", u);
}

6. question on function pointer.
char *(*(*x())[])()
7. GRANT command question
8. about MINUS set operator.

Java

9. RandomAccessFile
10. super class base class simple question
11. what is overridden
12. StringBUffer question


overall test
1. questions on java are based on oops concepts and
some are language based like StringBuffer class, RandomAccessFile
and File classes.
2. SQL/PLSQL, see all commands in SQL and exception, cursors, in PLSQL.
3. c is fine, but you should be fast in finding out answers so that you can spend
time on other questions.
4. i didn't get arithmetic questions.



Oracle Test 3-02-2004
1.void main()
{
struct a
{
char ch[10];
char *str;
};
struct a s1={"Hyderabad","Bangalore"};
printf("\n%c%c",s1.ch[0],*s1.str);
printf("\n%s%s",s1.ch,s1.str);
getch();
}

Ans: HB, HyderabadBangalor

2. main(int argc,int *argv[])
{
int i;
for(i=1;i<argc;i++)
printf("\n%s%s",argv[i],(i<argc-1)?"":"");
return 0;
getch();
}

file://Ans: i work for oracle

3.void main()
{
int i,j,k;
for(i=0;i<3;i++)
k=sum(i,i);
printf("\n%d",k);
getch();
}
sum(s,t)
{
static int m;
m+=s+t;
return m;
}
file://Ans: 6

4.void main()
{
int i;
clrscr();
for(i=1;i<6;++i)
switch(i)
{
case 1:
case 2: printf("%d,",i++);break;
case 3: continue;
case 4: printf("%d,",i);
}
printf("%d",i);
getch();
}
file://Ans: 1,4,6

5.Which of the storage class(es) becomes the global
variables for the =
entire
Program
(A) Extern
(B) Static
(C) Auto
(D) Register

ANSWER : A

6.//What is the output of the program
void main()
{
char s[]="oracle is the best";
char t[40];
char *ss,*tt;
while(*tt++=*ss++);
printf("%s",t);
getch();
}
// A. oracle is the best
// B. Core dump
// c. Error Message
// D. Goes into infinite loop
// Ans: B. core dump (Garbage value)

7.//What is the output of the program
void main()
{
int j[10]={9,7,5,3,1,2,4,6,9};
int i=1;
clrscr();
for(;i<9;i++)
printf("%d ",--j[i++]);
getch();
}
// A. 6,2,1,5
// B. 6,2,1,5,7
// c. Error Message
// D. core dump
// Ans: A. 6,2,1,5

8.//What is the output of the program
void main()
{
int i,j,k,n=5;
clrscr();
for(i=5;i>0;i--)
{
j=1<i;
k=n&j;
k==0?printf("0"):printf("1");
}
getch();
}
// A. 00011
// B. 11110
// c. 11001
// D. 11100
// Ans: B. 11110

9.Which of the following storage class(es) became
the global variable =
for the entire program
A. Extern
B. Static=20
c. Auto
D. Register
Ans: A

10.//What is the output of the program, if integer
occupies 2 bytes =
memory?
union
{
int a;
char b;
char c[10];
}u1;
void main()
{
int l=sizeof(u1);
printf("%d",l);
getch();
}
// A. 13
// B. 10
// c. 16
// D. None of the above
// Ans: B. 10

11.//What is the output of the program
void main()
{
fork();
printf(" Hello World");
getch();
}
// A. Hello World
// B. Hello World Hello World
// c. Error Message
// D. None of these
// Ans: B

12.//What is the output of the program
void main()
{
struct a
{
int i;
char *st1;
};
typedef struct a ST;
ST *str1;
str1=(ST*)malloc(100);
str1->i=100;
strcpy(str1->st1,"Welcome to Oracle");
printf(" %d%s\n",str1->i,str1->st1);
getch();
}
// A. core dump
// B. will not compile
// c. 100,Welcome to Oracle
// D. None of these
// Ans: C

13.//What is the output of the program
void main()
{
int i,j,k;
i=2;
j=4;
k=i++>j&2;
printf("%d\n",k);
if(++k && ++i<--j|| i++)
{
j=++k;
}
printf(" %d %d %d",i,-j--,k);
getch();
}
// A. 4,-3,2
// B. 5,-3,2
// c. 4,-2,2
// D. 5,-2,2
// Ans: D

14.Which of the following is not true incase of
Command line arguments
A.The argc parameter is used to hold the number
of arguments in the =
command line and is an integer
B. The argv parameter is a pointer to an array of
a character =
pointer and each one points to command line
arguments
C. The argv[1] always point to program name
D. None of above

Ans: C

15. A function without any return type declares
return=20
A. Integer
B. Float
C. Void
D. Syntax Error
Ans: A

16.//What is the output of the program
#include<stdio.h>
#include<conio.h>
#define sqr(a) a*a
void main()
{
int a=10,b=1,c;
c=sqr(10+1);
printf("Sqr Root of (10+1)is %d",c );
getch();
}
// A. 121
// B. 21
// c. 13
// D. Syntax Error
// Ans: B

17.//What is the output of the program
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j=20;
clrscr();
for(i=1;i<3;i++)
{
printf("%d,",i);
continue;
printf("%d",j);
break;
}
getch();
}
// A. 1,20
// B. 1,20,1,20
// c. 1,2
// D. 1,2,20,20
// Ans: c

18.//What is the output of the program
#include<stdio.h>
#include<conio.h>
void main()
{
int i=1*4/3-27%3^2+100*0.5-(4>3?1:2);
clrscr();
printf("%d",i);
getch();
}
// A. 49
// B. compile error
// c. 51
// D. 48
// Ans: b

19.What is the output of the program
#include<stdio.h>
#include<conio.h>
void main()
{
char *st1[3]= {"Hello","World","Oracle"};
*st1=st1[2];
st1[1]=*st1;
free(st1[0]);
free(st1[1]);
clrscr();
printf("%s %s %s",st1,st1[1],st1[2]);
getch();
}
// A. Garbage Garbage Oracle
// B. oracle oracle oracle
// c. Hello World Oracle
// D. Core Dump:cannot Print after freeing the
memory
// Ans: D

20.Consider the following structure =20
Struct {
int data;
struct node *prev;
struct node *next;
}NODE;

NULL <-- 5 --> 8 --> 10 --> NULL
p <-- q <-- r=20

WHAT WILL BE THE VALUE OF r-->prev-->-->next-->data
?
A. 8
B. Null
C. 5
D. 10
Ans: 10

21. what will be the output of the fallowing SELECT
statement ?
SELECT count(*)
FROM emp
Where exist (select 'X' From dept
where dept_name ='Stores'
and dept.dept_id=emp.dept_id)

A. select total number of employees belonging to
department " stores "
B. select all employees belonging to department "X"
C. select all employees belonging to department
"stores"
D. select total number of employees belonging to
department "X"


22. Denormalisation is done to=20
A. Check for Data Integrity
B. Reduce Data Redundancy
C. Intoduce Security Check
D. Increase Query performance .

23. How many columns are retrived from this query:
SELECT address1 || ',' ||address2 ||','
||address2 "Address" FROM =
employee;

A. 3
B. 2
C. 1
D. 0


24. What is the is the result of the fallowing Code
Piece=20
Insert into table A value(a1):
CREATE TABLE B AS SELECT * FROM A;
ROLLBAACK ;
A. Table B gets created with the row inserted in the
first statement.
B. Table B is not created
C. Table B gets created , but no row gets inserted
into Table A
D. Rollback throws up an exception .


25. The key word used in Oracle for string searching
is=20

A. SOUNDEX
B. DECODE
C. LIKE
D. HAVING

26. What does the ROLLBACK statement wil do in the
fool segment of =
code
PROGRAM STARTS HERE
........
SOME DML STAT.
...SAVEPOINT1
SOME DML STAT.
...SAVEPOINT2
SOME DML STAT.
...ROLLBACK
A. Rollback Dml changes to savepoint 1
B. Rollback Dml changes to savepoint 2
C. Rollback Dml changes of the last DML
ststs. just before =
ROllback stats
D. Rollback DML changes to the place whre the
program starts

27. Which clause u use to exclude the rows before
grouping them?
A. Group By
B. Having
C. Where
D. Minus

28. Which of the following statements is not true
about views?
A. u can create a index on views
B. Views donot have permanent data
C. Views can be based on one or more tables
D. Views can be dropped without dropping
tables

29 How many JION conditions are needed in JOIN query
to avoid a =
Cartesian Product?
A. No of tables + 1
B. No of tables - 1
C. No of colums + 1
D. No of colums - 1

30. "An item could be either a component or spare ".
How can u =
represent this scenerio in a E-R=20
A. Subtype Relation
B. Arc Relation
C. Recursive Relation
D. Many to Many Relationscription

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