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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q368-Q373):

NEW QUESTION # 368
You need to list the employees in DEPARTMENT_ID 20 days in a single row, ordered by HIRE_DATE.
Examine the sample output:

Which query will provide the required output?

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

Answer: C

NEW QUESTION # 369
View the Exhibits and examine the structure of the COSTSand PROMOTIONStables.
You want to display PROD_IDSwhose promotion cost is less than the highest cost PROD_IDin a promotion time interval.
Examine this SQL statements:

What will be the result?
Exhibit 1.

Exhibit 2.

A. It executes successfully and gives the required result
B. It executes successfully but does not give the required result
C. It gives an error because the ALL keyword is not valid
D. It gives an error because the GROUP BY clause is not valid

Answer: A

NEW QUESTION # 370
View the Exhibit and examine the description of the ORDERS table. (Choose two.)

Which two WHERE clause conditions demonstrate the correct usage of conversion functions?

A. WHERE Order_date_IN ( TO_DATE('OCT 21 2003', 'MON DD YYYY'), TO_CHAR('NOV
21 2003', 'MON DD YYYY') )
B. WHERE Order_date > TO_CHAR(ADD_MONTHS(SYSDATE, 6), 'MON DD YYYY')
C. WHERE Order_date > ( TO_DATE('JUL 10 2006', 'MON DD YYYY')
D. WHERE TO_CHAR(Order_date, 'MON DD YYYY') = 'JAN 20 2003'

Answer: C,D

NEW QUESTION # 371
Which three statements are true about time zones, date data types, and timestamp data types in an Oracle database?

A. A TIMESTAMP data type column contains information about year, month, and day
B. The SESSIONTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
C. The CURRENT_TIMESTAMP function returns data without time zone information
D. The DBTIMEZONE function can return an offset from Universal Coordinated Time (UTC)
E. A TIMESTAMP WITH LOCAL TIMEZONE data type column is stored in the database using the time zone of the session that inserted the row

Answer: B,D,E

NEW QUESTION # 372
Which statement is true regarding external tables?

A. ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.
B. The CREATE TABLE AS SELECT statement can be used to unload data into regular table in the database from an external table.
C. The default REJECT LIMIT for external tables is UNLIMITED.
D. The data and metadata for an external table are stored outside the database.

Answer: B

Explanation:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/tables013.htm

NEW QUESTION # 373
......

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