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Oracle 1z1-071 exam is a multiple-choice exam that comprises 73 questions. Candidates are given two hours to complete the exam, and the passing score is 63%. To pass the exam, candidates need to have a thorough understanding of SQL syntax and database implementation techniques. 1z1-071 exam is designed to validate one's knowledge of SQL concepts such as queries, data manipulation, data control language, and table creation.

Oracle 1z1-071 Exam is an important certification test for anyone interested in working with Oracle databases and SQL. Passing the exam demonstrates that the candidate has a solid understanding of SQL fundamentals and the ability to work with Oracle databases. With the right preparation and study, candidates can successfully pass the exam and earn their Oracle Database SQL Certified Associate certification.

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Oracle Database SQL Sample Questions (Q169-Q174):

NEW QUESTION # 169
Examine the create table statements for the stores and sales tables.
SQL> CREATE TABLE stores(store_id NUMBER(4) CONSTRAINT store_id_pk PRIMARY KEY, store_name VARCHAR2(12), store_address VARCHAR2(20), start_date DATE); SQL> CREATE TABLE sales(sales_id NUMBER(4) CONSTRAINT sales_id_pk PRIMARY KEY, item_id NUMBER(4), quantity NUMBER(10), sales_date DATE, store_id NUMBER(4), CONSTRAINT store_id_fk FOREIGN KEY(store_id) REFERENCES stores(store_id)); You executed the following statement:
SQL> DELETE from stores
WHERE store_id=900;
The statement fails due to the integrity constraint error:
ORA-02292: integrity constraint (HR.STORE_ID_FK) violated
Which three options ensure that the statement will execute successfully?

A. DELETE the rows with STORE_ID = 900 from the SALES table and then delete rows from STORES table.
B. Disable the primary key in the STORES table.
C. Create the foreign key in the SALES table on SALES_ID column with on DELETE CASCADE option.
D. Use CASCADE keyword with DELETE statement.
E. Disable the FOREIGN KEY in SALES table and then delete the rows.

Answer: A,C,E

Explanation:
Explanation/Reference:

NEW QUESTION # 170
Which three are true about system and object privileges

A. Adding a primary key constraint to an existing table in another schema requires a system privilege
B. WITH GRANT OPTION cannot be used when granting an object privilege to PUBLIC
C. Revoking an object privilege that was granted with the WITH GRANT OPTION clause has a cascading effect
D. Revoking a system privilege that was granted with the WITH ADMIN OPTION has a cascading effect.
E. Adding a foreign key constraint pointing to a table in another schema requires the REFERENCEs object privilege
F. WITH GRANT OPTION can be used when granting an object privilege to both users and roles

Answer: C,E,F

Explanation:
A: True. The WITH GRANT OPTION allows the grantee to grant the object privileges they received to another user or role. This can be used for both system and object privileges, thereby extending the privilege chain.
D: True. When an object privilege granted with the WITH GRANT OPTION is revoked, it also revokes the privileges that the grantee had re-granted to others. This is referred to as a cascading effect, which can impact multiple users and roles depending on the extent of re-granting.
F: True. To add a foreign key constraint that references a table in another schema, the user must have the REFERENCES object privilege on the target table in the other schema. This privilege is specific and necessary for the integrity constraints involving foreign keys.

NEW QUESTION # 171
Examine this data in the EMPLOYERS table

Which statement will execute successfully?

A. SELECT dept_id, INSTR (last_name,'A'), SUM (salary) FROM employees GROUP BY dept_id
B. SELECT dept_id, MAX (Last_name), SUM (salary) FROM employees GROUP BY dept_id
C. SELECT dept_id, STDDEV (last_name), SUM (salary) FROM employees GROUP BY dept_id
D. SELECT dept_id, LENGTH (last_name), SUM (salary) FROM employees GROUP BY dept_id

Answer: B

Explanation:
In SQL, the GROUP BY clause is used in conjunction with aggregate functions to group the result-set by one or more columns.
A). This statement will execute successfully. MAX() is an aggregate function that can be used to return the highest value of the selected column, and SUM() is an aggregate function used to sum the values. Both are valid in the SELECT statement with a GROUP BY clause grouping the results by dept_id.
B). This statement will not execute successfully when used with GROUP BY because LENGTH(last_name) is not an aggregate function and it doesn't appear in the GROUP BY clause. All selected columns that are not under an aggregate function must be included in the GROUP BY clause.
C). This statement will not execute successfully because STDDEV() is an aggregate function that calculates the standard deviation of a set of numbers, and it can only be used on numeric data types. last_name is not a numeric column.
D). This statement will not execute successfully for the same reason as B: INSTR(last_name, 'A') is not an aggregate function and must appear in the GROUP BY clause if it's in the SELECT clause.

NEW QUESTION # 172
You execute this command:
TRUNCATE TABLE depts;
Which two are true?

A. A ROLLBACK statement can be used to retrieve the deleted data.
B. It retains the indexes defined on the table.
C. It always retains the space used by the removed rows
D. It drops any triggers defined on the table.
E. A Flashback TABLE statement can be used to retrieve the deleted data.
F. It retains the integrity constraints defined on the table.

Answer: B,F

NEW QUESTION # 173
Which two are true about queries using set operators (UNION, UNION ALL, INTERSECT and MINUS?

A. The must be an equal number of columns In each select list.
B. The name off each column in the first Select list must match the name of the corresponding column In each subsequent select list.
C. Each select statement In the query can have an order by clause.
D. None of the set operators can be used when selecting CLOB columns.
E. The FOR update clause cannot be specified.

Answer: A,E

NEW QUESTION # 174
......

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