Tag: databases

Quizzes (243) Questions (4862)

Questions Related to databases

Multiple choice technology databases

Select the best answer PACKAGE foo_foo IS PROCEDURE foo ( p_foo_text IN VARCHAR2 ); PROCEDURE foo (p_foo_number IN NUMBER); END;

  1. Package specification is invalid. Too many procedures named foo.

  2. Package specification is invalid. First procedure should be called called foo_1, second procedure should be called foo_2.

  3. Package specification is valid. This is an example of overloading.

  4. Package specification is invalid. We can only have one procedure named foo in the package

  5. Package specification is valid. We can have an unlimited number of procedures name foo.

  6. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology databases

You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?

  1. ALTER TABLE students ADD PRIMARY KEY student_id;

  2. ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);

  3. ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;

  4. ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);

  5. ALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation