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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q319-Q324):

NEW QUESTION # 319
Which three are true about multiple INSERT statements?

A. They can be performed on relational tables.
B. They can be performed on views.
C. They can be performed on remote tables.
D. They can insert each computed row into more than one table.
E. They can be performed on external tables using SQL*Loader.
F. They can be performed only by using a subquery.

Answer: A,C,F

NEW QUESTION # 320
View the Exhibit and examine the structure of the ORDERS table.
The columns ORDER_MODE and ORDER TOTAL have the default values'direct "and respectively.
Which two INSERT statements are valid? (Choose two.)

A. INSERT INTO orders VALUES (1, '09-mar-2007', 'online',' ',1000);
B. INSERT INTO orders (order_id, order_date, order mode,customer_id, order_total) VALUES (1, TO_DATE (NULL),'online',101, NULL) ;
C. INSERT INTO orders (order id, order_date, order mode, order_total)VALUES (1,'10-mar-2007','online', 1000)
D. INSERT INTO (SELECT order_id, order date, customer_id FROM orders) VALUES (1, '09-mar-2007",101);
E. INSERT INTO orders VALUES('09-mar-2007',DEFAULT,101, DEFALLT);

Answer: B,C

Explanation:
Regarding valid INSERT statements into the ORDERS table:
B . This is a valid statement because it uses TO_DATE for potentially setting a NULL date and provides defaults implicitly where not specified, adhering to the column constraints and requirements.
D . This statement is correctly formatted and provides values for non-optional fields, using DEFAULT implicitly for unspecified optional fields.
Incorrect options:
A: The subquery format and values provided do not match the expected column count and types for direct insert.
C: Incorrect format due to an improper string for the ORDER_MODE and possibly incomplete values.
E: Incorrect syntax; DEFAULT should be correctly capitalized, and the value order and type must match the table structure.

NEW QUESTION # 321
You need to list the employees in DEPARTMENT_ID20 days in a single row, ordered by HIRE_DATE.
Examine the sample output:

Which query will provide the required output?
SELECT LISTAGG(last_name)

A. WITHIN GROUP ORDER BY (hire_date) "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; SELECT LISTAGG(last_name, '; ')
B. WITHIN GROUP ORDER BY (hire_date) "Emp_list", MIN(hire_date) "Earliest" FROM employees WHERE department_id = 30; SELECT LISTAGG(last_name, '; ') "Emp_list", MIN(hire_date) "Earliest"
C. FROM employees
WHERE department_id = 30;
ORDER BY (hire_date);
D. FROM employees
WHERE department_id = 30;
WITHIN GROUP ORDER BY (hire_date);
SELECT LISTAGG(last_name, '; ') "Emp_list", MIN(hire_date) "Earliest"

Answer: B

NEW QUESTION # 322
The following are the steps for a correlated subquery, listed in random order:
1) The WHERE clause of the outer query is evaluated.
2) The candidate row is fetched from the table specified in the outer
query.
3) The procedure is repeated for the subsequent rows of the table, till all the rows are processed.
4) Rows are returned by the inner query, after being evaluated with the value from the candidate row in the outer query.
Identify the option that contains the steps in the correct sequence in which the Oracle server evaluates a correlated subquery.

A. 4,2,1,3
B. 2,4,1,3
C. 2,1,4,3
D. 4,1,2,3

Answer: B

NEW QUESTION # 323
Examine the data in the COLORStable:

Examine the data in the BRICKStable:

Which two queries return all the rows from COLORS? (Choose two.)

Answer: B,D

NEW QUESTION # 324
......

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