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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Relational Database Concepts	10%	- Relationship between database and SQL - Theoretical and physical aspects of relational databases - ERD and SQL statement mapping
Topic 2: Aggregating Data Using Group Functions	10%	- GROUP BY and HAVING clauses - Handling NULLs in group functions - SUM, AVG, COUNT, MAX, MIN functions
Topic 3: Using Subqueries to Solve Queries		- Correlated subqueries for update/delete - Single-row and multi-row subqueries
Topic 4: Using Single-Row Functions to Customize Output	20%	- Character, number, and date functions - Nested functions usage
Topic 5: Manipulating Data and Managing Transactions		- Multi-table inserts - Transaction control: COMMIT, ROLLBACK, SAVEPOINT - INSERT, UPDATE, DELETE, MERGE statements
Topic 6: Displaying Data from Multiple Tables	15%	- Cartesian products - Self-joins and outer joins - Equijoins and non-equijoins
Topic 7: Using SET Operators		- Ordering results with set operations - UNION, UNION ALL, INTERSECT, MINUS operators
Topic 8: Working with Time Zones and Date/Time Data		- Time zone conversion functions - TIMESTAMP, INTERVAL data types
Topic 9: Managing Indexes, Synonyms and Sequences		- Create and maintain indexes - Create and use sequences - Create and use synonyms
Topic 10: Retrieving Data Using SQL SELECT Statement	20%	- Arithmetic operations and NULL handling - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT
Topic 11: Conversion Functions and Conditional Expressions	10%	- Implicit and explicit data type conversion - NVL, NULLIF, COALESCE and CASE expressions - TO_CHAR, TO_NUMBER, TO_DATE functions
Topic 12: Managing Tables and Constraints		- Constraints: primary key, foreign key, unique, check, not null - Data types, creating/altering/dropping tables - Temporary and external tables
Topic 13: Using Data Dictionary Views		- Retrieve metadata and object information
Topic 14: Controlling User Access		- System and object privileges - Roles, granting and revoking privileges
Topic 15: Managing Views		- Updatable and read-only views - Create, modify and drop views
Topic 16: Restricting and Sorting Data	15%	- ORDER BY clause and sorting rules - Operator precedence - WHERE clause and filtering conditions - Substitution variables, DEFINE and VERIFY commands

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Oracle Database SQL Sample Questions (Q221-Q226):

NEW QUESTION # 221
Which two statements are true regarding views? (Choose two.)

A. A simple view in which column aliases have been used cannot be updated.
B. The OR REPLACEoption is used to change the definition of an existing view without dropping and re- creating it.
C. Rows added through a view are deleted from the table automatically when the view is dropped.
D. The WITH CHECK OPTIONconstraint can be used in a view definition to restrict the columns displayed through the view.
E. Rows cannot be deleted through a view if the view definition contains the DISTINCTkeyword.
F. A subquery used in a complex view definition cannot contain group functions or joins.

Answer: B,E

NEW QUESTION # 222
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?
ALTER TABLE orders

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

Answer: C

NEW QUESTION # 223
In your session, the NLS._DAE_FORMAT is DD- MM- YYYY.There are 86400 seconds in a day.Examine
this result:
DATE
02-JAN-2020
Which statement returns this?

A. SELECT TO_ CHAR(TO_ DATE('29-10-2019') +INTERVAL '2'; MONTH + INTERVAL '5'; DAY -
INTERVAL '86410' SECOND, ' DD-MON-YYYY') AS "date"
FROM DUAL;
B. SELECT-TO_CHAR(TO _DATE('29-10-2019'+ INTERVAL '2' MONTH+INTERVAL '6' DAYINTERVAL
'120' SECOND, 'DD-MON-YY') AS "daTe"
FROM DUAL;
C. SELECT To CHAR(TO _DATE('29-10-2019') + INTERVAL '2' NONTH + INTERVAL '5' DAY
INEERVAL '120' SECOND, ' DD-MON-YYY) AS "date"
FROM DUAL;
D. SELECT-TO_CHAR(TO _DATE('29-10-2019'+ INTERVAL '2' MONTH+INTERVAL '4' DAYINTERVAL
'120' SECOND, 'DD-MON-YY') AS "daTe"
FROM DUAL;
E. SELECT TO_ CHAR(TO_ DATE('29-10-2019') + INTERVAL '3' MONTH + INTERVAL '7' DAY -
INTERVAL '360' SECOND, ' DD-MON-YYYY') AS "date"
FROM DUAL;

Answer: C

NEW QUESTION # 224
Examine the description of the SALES table:

The SALES table has 5,000 rows.
Examine this statement:
CREATE TABLE sales1 (prod id, cust_id, quantity_sold, price)
AS
SELECT product_id, customer_id, quantity_sold, price
FROM sales
WHERE 1=1
Which two statements are true?

A. SALES1 has PRIMARY KEY and UNIQUE constraints on any selected columns which had those constraints in the SALES table.
B. SALES1 is created with 1 row.
C. SALES1 Is created with 5,000 rows.
D. SALES1 has NOT NULL constraints on any selected columns which had those constraints in the SALES table.

Answer: C,D

NEW QUESTION # 225
View the exhibit and examine the structure of ORDERSand CUSTOMERStables.

Which INSERT statement should be used to add a row into the ORDERStable for the customer whose CUST_LAST_NAMEis Robertsand CREDIT_LIMITis 600? Assume there exists only one row with CUST_LAST_NAME as Roberts and CREDIT_LIMIT as 600.

A. INSERT INTO orders (order_id, order_date, order_mode,
( SELECT customer id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total);
VALUES (1,'10-mar-2007', 'direct', &customer_id, 1000);
B. INSERT INTO (SELECT o.order_id, o.order_date, o.order_mode, c.customer_id, o.order_total FROM orders o, customers c
WHERE o.customer_id = c.customer_id AND c.cust_last_name='Roberts' AND
c.credit_limit=600)
VALUES (1,'10-mar-2007', 'direct', (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
C. INSERT INTO orders
VALUES (1,'10-mar-2007', 'direct',
( SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
D. INSERT INTO orders (order_id, order_date, order_mode,
( SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total);
VALUES (1,'10-mar-2007', 'direct', &customer_id, 1000);

Answer: C

NEW QUESTION # 226
......

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