1Z1-071 RELEVANT QUESTIONS - 1Z1-071 VALID EXAM FORUM

1z1-071 Relevant Questions - 1z1-071 Valid Exam Forum

1z1-071 Relevant Questions - 1z1-071 Valid Exam Forum

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Oracle Database SQL Sample Questions (Q112-Q117):

NEW QUESTION # 112
Which two queries execute successfully?

  • A. SELECT NULLIF(100, 100) FROM DUAL;
  • B. SELECT NULLIF(100, 'A') FROM DUAL;
  • C. SELECT COALESCE(100, NULL, 200) FROM DUAL;
  • D. SELECT COALESCE(100, 'A' ) FROM DUAL;
  • E. SELECT NULLIF(NULL, 100) FROM DUAL;

Answer: A,C


NEW QUESTION # 113
In which normal form is a table, if it has no multi-valued attributes and no partial dependencies?

  • A. third normal form
  • B. second normal form
  • C. first normal form
  • D. fourth normal form

Answer: B

Explanation:
Explanation
https://blog.udemy.com/database-normal-forms/


NEW QUESTION # 114
which three statements are true regarding single row subqueries?

  • A. they must be placed on the left side of the comparison operator or condition.
  • B. THEY CAN BE USED IN THE HAVING CLAUSE
  • C. they must return a row to prevent errors in the SQL statement.
  • D. THEY MUST BE PLACED ON THE RIGHT SIDE OF THE COMPARISON OPERATOR OR
    CONDITION.
  • E. THEY CAN BE USED in the where clause.
  • F. A SQL STATEMENT MAY HAVE MULTIPLE SINGLE ROW SUBQUERY BLOCKS.

Answer: B,E,F


NEW QUESTION # 115
Which task can be performed by using a single Data Manipulation Language (DML) statement?

  • A. removing all data only from one single column on which a primary key constraint is defined
  • B. adding a column with a default value when inserting a row into a table
  • C. removing all data only from one single column on which a unique constraint is defined
  • D. adding a column constraint when inserting a row into a table

Answer: C


NEW QUESTION # 116
Which two statements are true? (Choose two.)

  • A. All the dynamic performance views prefixed with V$ are accessible to all the database users.
  • B. DICTIONARY is a view that contains the names of all the data dictionary views that the user can access.
  • C. The user SYSTEM owns all the base tables and user-accessible views of the data dictionary.
  • D. The USER SYNONYMS view can provide information about private synonyms.
  • E. The USER OBJECTS view can provide information about the tables and views created by the user only.

Answer: B,D

Explanation:
A . The USER SYNONYMS view can provide information about private synonyms: This view contains information about private synonyms that have been created by the user. It lists all synonyms that are accessible to the user in their schema.
E . DICTIONARY is a view that contains the names of all the data dictionary views that the user can access: This view lists the names of all data dictionary views available to the user, providing a directory of useful database metadata.
Incorrect options:
B: The SYSTEM user does not own all base tables of the data dictionary; some are owned by SYS.
C: Not all users have access to dynamic performance views prefixed with V$; access is restricted based on privileges.
D: The USER_OBJECTS view lists all objects owned by the user, not just tables and views but also other types of schema objects like procedures and functions.


NEW QUESTION # 117
......

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