Technical Questions asked in Oracle

  1. Which of the following data structures are used in RDBMS.
    1. Graph
    2.  Array of structures
    3.  Trees
    4.  None of these
    Answer: Option B.
  2. NULL is
    1. the same as 0 for integer
    2.  the same as blank for character
    3.  the same as 0 for integer and blank for character
    4.  not a value
    Answer: Option D.

Complete Test Series for Wipro
Bag your Dream Job Today Comprehensive Online Tests Inclusive Prep for All Placement Exams Acquire Essential Domain Skills

  1.  Choose the proper statement
    1. :volatileisareserved keywordinC++
    2.  :userdefinedvariablescanalsobeoverloadedalongwithmethodandoperators.
    3.  :'bool' keywordisusedforlogicalvalues
    4.  :Both Aand C
    Answer: Option D.
  2. Analyse the following code snippet: ClassTemp 

    private: 
    charm_acEmpName[25]; 
    public: 
    char*GetFirstChar() 

    strcpy(m_acEmpName,"Hello"); 
    returnthis->m_acEmpName; 

    }; 
    intmain(intargc,char**argv)v { 
    Temp oTempObject; cout< } .
    1. Displays the first character of the string
    2. Displays the complete string Hello
    3. Error
    4. Displays the last character of the string
    Answer: Option B.
  3. using' in C++ is for.
    1. 'using' does not exist in C++
    2.  used for library functions
    3.  'using' is a literal in C++
    4.  used for pointers
    Answer: Option B.
    Note : it is also used often for namespaces.
  4. Which of the following statements is true after execution of the program? 
    int a[10],I,*p; 
    a[0]=1; a[1]=2; p=a; (*p)++;
    1. a[0]=2
    2.  a[1]=3
    3.  a[1]=1
    4.  a[0]=3
    Answer: Option A.
    Explanation: base adderss of array a[] is assigned to p, *p gives value hold by base address, thus (*p)++ increment the value hold by base address by one

Complete Campus Placement Training Course
Video Lectures Online Tests E-Books & Assignments