Validate your 1z1-071 Exam Preparation with 1z1-071 Practice Test (Online & Offline) [Q101-Q125]

Validate your 1z1-071 Exam Preparation with 1z1-071 Practice Test (Online & Offline)

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Oracle 1z1-071 certification exam is designed for individuals who want to prove their expertise in using SQL to manage Oracle databases. 1z1-071 exam is intended for database administrators, developers, and other IT professionals who work with Oracle databases on a regular basis. 1z1-071 exam covers a wide range of topics related to SQL, including data retrieval, data manipulation, data definition, and schema objects.

Oracle 1z1-071 Exam Syllabus Topics:

Topic	Details
Topic 1	Reporting Aggregated Data Using Group Functions: In this section of the exam, it is covered how to restrict Group Results and create Groups of Data.
Topic 2	Managing Indexes Synonyms and Sequences: In this domain, topics include managing Indexes, managing Synonyms, and managing Sequences.
Topic 3	Relational Database concepts: In this domain, the topics covered include explaining the theoretical and physical aspects of a relational database and relating clauses in SQL Select Statement to Components of an ERD.
Topic 4	Restricting and Sorting Data: This domain covers topics such as applying Rules of precedence for operators in an expression, limiting Rows Returned in a SQL Statement, and utilizing Substitution Variables.
Topic 5	Managing Data in Different Time Zones: In this domain, topics include working with CURRENT_DATE, CURRENT_TIMESTAMP, and LOCALTIMESTAMP, and working with INTERVAL data types.
Topic 6	Managing Objects with Data Dictionary Views: This domain covers utilizing data dictionary views.
Topic 7	Controlling User Access: In this module, the topics include differentiating system privileges from object privileges
Topic 8	Using Subqueries to Solve Queries: In this module, topics include using Single Row Subqueries, Multiple Row Subqueries, and how to delete and update rows.
Topic 9	Managing Indexes Synonyms and Sequences: In this domain, exam-takers are tested for their skill in managing Indexes, Synonyms, and Sequences.
Topic 10	sing Single-Row Functions to Customize Output: This particular domain of the exam covers topics such as manipulating strings with character functions in SQL SELECT and WHERE clauses, performing arithmetic with date data, and manipulating numbers with the ROUND, TRUNC, and MOD functions. It also covers manipulating dates with the date function.
Topic 11	Retrieving Data using the SQL SELECT Statement: This domain comprises topics such as using Column aliases, the SQL SELECT statement, utilizing the concatenation operator, literal character strings, alternative quote operator, and the DISTINCT keyword.
Topic 12	Using Conversion Functions and Conditional Expressions: In this domain, the topics covered are how to apply the NVL, NULLIF, and COALESCE functions to data, how to understand the implicit and explicit data type conversion, utilize the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions, and nesting multiple functions.
Topic 13	Displaying Data from Multiple Tables: In this domain, topics include how to use Self-joins, use different types of Joins, how to utilize Nonequijoins, and OUTER joins.
Topic 14	Granting privileges on tables and distinguishing between giving privileges and roles.
Topic 15	Managing Views: This domain covers how to manage or oversee modules.

NEW QUESTION # 101
Which two statements are true about the rules of precedence for operators?

A. The concatenation operator || is always evaluated before addition and subtraction in an expression.
B. The + binary operator has the highest precedence in an expression in a SQL statements.
C. Multiple parentheses can be used to override the default precedence of operators in an expression.
D. NULLS influence the precedence of operators in an expression.
E. Arithmetic operators with equal precedence are evaluated from left to right within an expression.

Answer: C,E

Explanation:
A). True, arithmetic operators of equal precedence are evaluated from left to right within an expression, according to the standard SQL operator precedence. B. True, multiple parentheses can be used in an expression to change the order of operations and override the default precedence of operators.
C, D, and E are not correct because: C. The + binary operator does not have the highest precedence; multiplication and division have higher precedence in SQL. D. NULLS do not influence the precedence of operators in an expression; they may affect the result of an operation but not the order in which operators are evaluated. E. The concatenation operator (||) has lower precedence than arithmetic operators in SQL expressions.
References:
* Oracle documentation on operator precedence: Oracle Database SQL Language Reference

NEW QUESTION # 102
View the exhibit and examine the ORDERS table.

The ORDERS table contains data and all orders have been assigned a customer ID. Which statement would add a NOT NULL constraint to the CUSTOMER_ID column?

A. ALTER TABLE ordersADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
B. ALTER TABLE ordersMODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
C. ALTER TABLE ordersMODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
D. ALTER TABLE ordersADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;

Answer: B

NEW QUESTION # 103
Which two tasks require subqueries?

A. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE.
B. Display the total number of products supplied by supplier 102 which have a product status of obsolete.
C. Display suppliers whose PROD_LIST_PRICE is less than 1000.
D. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable.
E. Display the minimum PROD_LIST_PRICE for each product status.

Answer: A,D

Explanation:
C: True. To display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE, you would need to use a subquery to first calculate the average PROD_LIST_PRICE and then use that result to compare each product's list price to the average.
E: True. Displaying products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products and whose status is orderable would require a subquery. The subquery would be used to determine the average PROD_LIST_PRICE, and then this average would be used in the outer query to filter the products accordingly.
Subqueries are necessary when the computation of a value relies on an aggregate or a result that must be obtained separately from the main query, and cannot be derived in a single level of query execution.
References:Oracle's SQL documentation provides guidelines for using subqueries in scenarios where an inner query's result is needed to complete the processing of an outer query.

NEW QUESTION # 104
Evaluate the following SELECT statement and view the Exhibit to examine its output:

SELECT constraint_name, constraint_type, search_condition, r_constraint_name, delete_rule, status FROM user_constraints WHERE table_name = ORDERS
Which two statements are true about the output? (Choose two.)

A. The column DELETE_RULE decides the state of the related rows in the child table when the corresponding row is deleted from the parent table.
B. The STATUS column indicates whether the table is currently in use.
C. In the second column, indicates a check constraint.
D. The R_CONSTRAINT_NAME column gives the alternative name for the constraint.

Answer: A,C

NEW QUESTION # 105
Examine the description of the BOOKStable:

The table has 100 rows.
Examine this sequence of statements issued in a new session:

Which two statements are true? (Choose two.)

A. The first ROLLBACKcommand restores the 101 rows that were deleted and commits the inserted row.
B. The second ROLLBACKcommand replays the delete.
C. The second ROLLBACK command undoes the insert.
D. The first ROLLBACKcommand restores the 101 rows that were deleted, leaving the inserted row still to be committed.
E. The second ROLLBACK command does nothing.

Answer: A,C

NEW QUESTION # 106
Which two tasks require subqueries?

A. Display the number of products whose PROD_LIST_PRICE is more than the average PROD_LIST_PRICE.
B. Display the total number of products supplied by supplier 102 which have a product status of obsolete.
C. Display suppliers whose PROD_LIST_PRICE is less than 1000.
D. Display products whose PROD_MIN_PRICE is more than the average PROD_LIST_PRICE of all products, and whose status is orderable.
E. Display the minimum PROD_LIST_PRICE for each product status.

Answer: A,D

NEW QUESTION # 107
View the Exhibit and examine the data in the PRODUCTStable.

Which statement would add a column called PRICE, which cannot contain NULL?
ALTER TABLE products

A. ADD price NUMBER(8,2) DEFAULT 0 NOT NULL;
ALTER TABLE products
B. ADD price NUMBER(8,2) NOT NULL;
ALTER TABLE products
C. ADD price NUMBER(8,2) DEFAULT CONSTRAINT p_nn NOT NULL.
D. ADD price NUMBER(8,2) DEFAULT NOT NULL;
ALTER TABLE products

Answer: A

Explanation:
Explanation

NEW QUESTION # 108
View the exhibit and examine the data in ORDERS_MASTER and MONTHLY_ORDERS tables.

Evaluate the following MERGE statement:
MERGE_INTO orders_master o
USING monthly_orders m
ON (o.order_id = m.order_id)
WHEN MATCHED THEN
UPDATE SET o.order_total = m.order_total
DELETE WHERE (m.order_total IS NULL)
WHEN NOT MATCHED THEN
INSERT VALUES (m.order_id, m.order_total);
What would be the outcome of the above statement?

A. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 4.
B. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2, 3 and 4.
C. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 3.
D. The ORDERS_MASTER table would contain the ORDER_IDs 1 and 2.

Answer: A

Explanation:
Explanation
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9016.htm

NEW QUESTION # 109
Examine this statement:

Which two statements are true?

A. The names of employees maximum salary will appear fist to ascending order
B. All remaining employee names will appear in descending order
C. All remaining employee names will appear in ascending order
D. All remaining employee names will appear in an ascending order
E. The names of employees maximum salary will appear fist to descending order
F. The names of employees remaining the maximum salary will appear first in an ascending order

Answer: C,E

NEW QUESTION # 110
View the exhibit and examine the ORDERStable.

The ORDERStable contains data and all orders have been assigned a customer ID. Which statement would add a NOTNULLconstraint to the CUSTOMER_IDcolumn?

A. ALTER TABLE orders
MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
B. ALTER TABLE orders
ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;
C. ALTER TABLE orders
ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
D. ALTER TABLE orders
MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);

Answer: A

NEW QUESTION # 111
Evaluate the following ALTER TABLE statement:
ALTER TABLE orders
SET UNUSED (order_date);
Which statement is true?

A. The ORDER_DATE column must be empty for the ALTER TABLE command to execute successfully.
B. The DESCRIBE command would still display the ORDER_DATE column.
C. ROLLBACK can be used to restore the ORDER_DATE column.
D. After executing the ALTER TABLE command, a new column called ORDER_DATE can be added to the ORDERS table.

Answer: D

NEW QUESTION # 112
Which three statements are true regarding subqueries?

A. Main query and subquery can get data from different tables.
B. Only one column or expression can be compared between the main query and subquery.
C. Multiple columns or expressions can be compared between the main query and subquery.
D. Subqueries can contain ORDER BYbut not the GROUP BYclause.
E. Main query and subquery must get data from the same tables.
F. Subqueries can contain GROUP BY and ORDER BYclauses.

Answer: A,C,F

Explanation:
Explanation/Reference:
References:
http://docs.oracle.com/javadb/10.6.2.1/ref/rrefsqlj13658.html

NEW QUESTION # 113
View the Exhibit and examine the structure of CUSTOMERS table.

Evaluate the following query:

Which statement is true regarding the above query?

A. It produces an error because the condition on the CUST_FIRST_NAME column is not valid.
B. It produces an error because the condition on the CUST_CITY column is not valid.
C. It executes successfully.
D. It produces an error because conditions on the CUST_CREDIT_LIMIT column are not valid.

Answer: C

NEW QUESTION # 114
Which three actions can you perform by using the ALTER TABLE command?

A. Lock a set of rows in a table.
B. Restrict all DML statements on a table.
C. Drop all columns simultaneously from a table.
D. Enable or disable constraints on a table.
E. Drop pseudocolumns from a table.
F. Rename a table.

Answer: C,D,F

NEW QUESTION # 115
Examine the structure of the two tables.

Which two queries execute successfully? (Choose two.)

A. Option D
B. Option A
C. Option C
D. Option E
E. Option B

Answer: A,C

NEW QUESTION # 116
Which statement is true regarding the INTERSECT operator?

A. Reversing the order of the intersected tables alters the result.
B. The number of columns and data types must be identical for all SELECT statements in the query.
INTERSECT Returns only the rows that occur in both queries' result sets, sorting them and removing duplicates.
The columns in the queries that make up a compound query can have different names, but the output result set will use the names of the columns in the first query.
C. It ignores NULLs.
D. The names of columns in all SELECT statements must be identical.

Answer: B

NEW QUESTION # 117
Examine the description of the EMPLOYEES table:

Which two queries return rows for employees whose manager works in a different department?

A. SELECT emp. *
FROM employees emp
RIGHT JOIN employees mgr
ON emp.manager_ id = mgr. employee id
AND emp. department id <> mgr.department_ id
WHERE emp. employee_ id IS NOT NULL;
B. SELECT emp.*
FROM employees emp
WHERE NOT EXISTS (
SELECT NULL
FROM employees mgr
WHERE emp.manager id = mgr.employee_ id
AND emp.department_id<>mgr.department_id
);
C. SELECT emp. *
FROM employees emp
JOIN employees mgr
ON emp. manager_ id = mgr. employee_ id
A ND emp. department_ id<> mgr.department_ id;
D. SELECT emp.*
FROM employees emp
LEFT JOIN employees mgr
ON emp.manager_ id = mgr.employee_ id
AND emp. department id < > mgr. department_ id;
E. SELECT emp. *
FROM employees emp
WHERE manager_ id NOT IN (
SELECT mgr.employee_ id
FROM employees mgr
WHERE emp. department_ id < > mgr.department_ id
);

Answer: A,C

NEW QUESTION # 118
Examine the structure of the ORDERS table: (Choose the best answer.)

You want to find the total value of all the orders for each year and issue this command:
SQL> SELECT TO_CHAR(order_date,'rr'), SUM(order_total) FROM orders
GROUP BY TO_CHAR(order_date, 'yyyy');
Which statement is true regarding the result?

A. It return an error because the datatype conversion in the SELECT list does not match the data type conversion in the GROUP BY clause.
B. It executes successfully and gives the correct output.
C. It returns an error because the TO_CHAR function is not valid.
D. It executes successfully but does not give the correct output.

Answer: A

NEW QUESTION # 119
Evaluate the following query:
SQL> SELECT TRUNC (ROUND (156.00, -1),-1)
FROM DUAL;
What would be the outcome?

A. 0
B. 1
C. 2
D. 3
E. 4

Answer: E

NEW QUESTION # 120
Which two are true about using constraints?

A. A table can have multiple PRIMARY KEY and multiple FOREIGN KEY constraints.
B. A FOREIGN KEY column in a child table and the referenced PRIMARY KEY column in the parenttable must have the same names.
C. NOT NULL can be specified at the column and at the table level.
D. A table can have only one PRIMARY KEY and one FOREIGN KEY constraint.
E. PRIMARY KEY and FOREIGNY constraints can be specified at the column and at the table level
F. A table can have only one PRIMARY KEY but may have multiple FOREIGN KEY constraints.

Answer: E,F

Explanation:
In Oracle Database 12c, it is important to understand the behavior and properties of constraints.
A). This statement is false. A FOREIGN KEY column in a child table does not need to have the same name as the referenced PRIMARY KEY column in the parent table. What is required is that the data type is the same and that the values in the FOREIGN KEY column correspond to values in the PRIMARY KEY column of the parent table.
B). This statement is false. A table cannot have multiple PRIMARY KEY constraints. By definition, a PRIMARY KEY is a unique identifier for a row in a table, and there can only be one such identifier.
C). This statement is false for the same reasons as B; a table can have only one PRIMARY KEY. However, it can have multiple FOREIGN KEY constraints that reference PRIMARY KEYS in other tables.
D). This is true. PRIMARY KEY and FOREIGN KEY constraints can indeed be specified at the column level with the column definition or at the table level with the ALTER TABLE statement.
E). This is true. A table can have only one PRIMARY KEY constraint because it defines a unique row identifier. However, it can have multiple FOREIGN KEY constraints referencing keys in other tables, allowing for complex relational structures.
F). This statement is false. NOT NULL constraints are always defined at the column level, as they apply to individual columns. They cannot be specified at the table level.
References:
* Oracle Documentation on Constraints:
https://docs.oracle.com/database/121/SQLRF/clauses002.htm#SQLRF52271
* Oracle Documentation on NOT NULL Constraints:
https://docs.oracle.com/database/121/SQLRF/clauses002.htm#SQLRF52162

NEW QUESTION # 121
The SALES table has columns PROD_IDand QUANTITY_SOLDof data type NUMBER.
Which two queries execute successfully? (Choose two.)
SELECT prod_id FROM sales WHERE quantity_sold > 55000 GROUP BY prod_id HAVING

A. SELECT prod_id FROM sales WHERE quantity_sold > 55000 AND COUNT(*) > 10 GROUP
B.
C. BY prod_id HAVING COUNT(*) > 10;
SELECT COUNT(prod_id) FROM sales WHERE quantity_sold > 55000 GROUP BY prod_id;
D. BY COUNT(*) > 10;
SELECT COUNT(prod_id) FROM sales GROUP BY prod_id WHERE quantity_sold > 55000;
E. COUNT(*) > 10;
SELECT prod_id FROM sales WHERE quantity_sold > 55000 AND COUNT(*) > 10 GROUP

Answer: A,E

NEW QUESTION # 122
Examine the description of the CUSTOMERS table:

You need to display last names and credit limits of all customers whose last name starts with A or B in lower or upper case, and whose credit limit is below 1000.
Examine this partial query:

Which two WHERE conditions give the required result?

A. Option D
B. Option C
C. Option E
D. Option A
E. Option B

Answer: C,E

NEW QUESTION # 123
Sales data of a company is stored in two tables, SALES1and SALES2, with some data being duplicated across the tables. You want to display the results from the SALES1table, which are not present in the SALES2table.

Which set operator generates the required output?

A. UNION
B. MINUS
C. PLUS
D. INTERSECT
E. SUBTRACT

Answer: B

Explanation:
Explanation/Reference:
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14200/queries004.htm

NEW QUESTION # 124
Evaluate the following two queries:

Which statement is true regarding the above two queries?

A. Performance would improve in query 2 only if there are null values in the CUST_CREDIT_LIMIT column.
B. Performance would degrade in query 2.
C. There would be no change in performance.
D. Performance would improve in query 2.

Answer: C

NEW QUESTION # 125
......

To pass the Oracle 1z0-071 certification exam, you need to have a good understanding of SQL and its syntax. You should also be familiar with database concepts such as data modeling, normalization, and indexing. In addition, you need to have hands-on experience with Oracle Database SQL to be able to answer the exam questions effectively.

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