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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q341-Q346):

NEW QUESTION # 341
You have the privileges to create any type of synonym.
Which statement will create a synonym called EMPfor the HCM.EMPLOYEE_RECORDS table that is accessible to all users?

A. CREATE SYNONIM PUBLIC.emp FOR hcm.employee_records;
B. CREATE SYNONIM emp FOR hcm.employee_records;
C. CREATE SYNONIM SYS.emp FOR hcm.employee_records;
D. CREATE PUBLIC SYNONIM emp FOR hcm.employee_records;
E. CREATE GLOBAL SYNONIM emp FOR hcm.employee_records;

Answer: D

Explanation:
CREATE PUBLIC SYNONYM emp_table
Reference: https://docs.oracle.com/database/121/SQLRF/statements_7001.htm#SQLRF01401

NEW QUESTION # 342
Examine the structure of the MEMBERS table.

Which query can be used to display the last names and city names only for members from the states MO and MI?

A. SELECT DISTINCT last_name, city FROM members WHERE state ='MO' OR state ='MI';
B. SELECT last_name, city FROM members WHERE state LIKE 'M%';
C. SELECT last_name, city FROM members WHERE state ='MO' AND state ='MI';
D. SELECT last_name, city FROM members WHERE state IN ('MO', 'MI');

Answer: D

NEW QUESTION # 343
Which three statements about roles are true? (Choose three.)

A. A single user can be assigned multiple roles.
B. Privileges are assigned to a role using the ALTER ROLE statement.
C. A role is named group of related privileges that can only be assigned to a user.
D. A single role can be assigned to multiple users.
E. Roles are assigned to users using the ALTER USER statement.
F. Roles are assigned to roles using the ALTER ROLE statement.
G. Privileges are assigned to a role using the GRANT statement.

Answer: A,D,G

Explanation:
Use the GRANT statement to assign access privileges and roles.
http://archive.dnnsoftware.com/docs/85/administrators/security/roles/assign-multiple-users-to-role.html
https://www.dnnsoftware.com/docs/administrators/user-accounts/assign-user-to-multiple-roles.html
https://www.ibm.com/support/knowledgecenter/en/SSGU8G_11.70.0/com.ibm.sqls.doc/ids_sqs_0
828.htm

NEW QUESTION # 344
See the Exhibit and Examine the structure of the CUSTOMERS table:

Using the CUSTOMERS table, you need to generate a report that shows an increase in the credit limit by 15% for all customers. Customers whose credit limit has not been entered should have the message "Not Available" displayed.
Which SQL statement would produce the required result?

A. SELECT NVL(cust_credit_limit*.15,'Not Available') "NEW CREDIT" FROM customers;
B. SELECT NVL(cust_credit_limit,'Not Available')*.15 "NEW CREDIT" FROM customers;
C. SELECT NVL(TO_CHAR(cust_credit_limit*.15),'Not Available') "NEW CREDIT" FROM customers;
D. SELECT TO_CHAR(NVL(cust_credit_limit*.15,'Not Available')) "NEW CREDIT" FROM customers;

Answer: C

Explanation:
NVL Function
Converts a null value to an actual value:
Data types that can be used are date, character, and number.
Data types must match:
NVL(commission_pct,0)
NVL(hire_date,'01-JAN-97')
NVL(job_id,'No Job Yet')

NEW QUESTION # 345
Which three statements are true about the ALTER TABLE....DROP COLUMN....command?

A. A dropped column can be rolled back.
B. A column can be dropped only if it does not contain any data.
C. The column in a composite PRIMARY KEYwith the CASCADEoption can be dropped.
D. A column can be dropped only if another column exists in the table.
E. A parent key column in the table cannot be dropped.

Answer: C,D,E

NEW QUESTION # 346
......

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