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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q111-Q116):

NEW QUESTION # 111
Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION? (Choose two.)

A. Each SELECT statement in the compound query must have its own ORDER BY clause.
B. The first column in the first SELECT of the compound query with the UNION operator is used by default to sort output in the absence of an ORDER BY clause.
C. Column positions must be used in the ORDER BY clause.
D. Each SELECT statement in the compound query can have its own ORDER BY clause.
E. Only column names from the first SELECT statement in the compound query are recognized.

Answer: D,E

NEW QUESTION # 112
Which statement adds a column called SALARY to the EMPLOYEES table having 100 rows, which cannot contain null?

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

Answer: B

NEW QUESTION # 113
Which two statements are true about Oracle synonyms?

A. All private synonym names must be unique in the database.
B. A synonym has an object number.
C. Any user can create a public synonym.
D. A synonym can have a synonym.
E. A synonym can be created on an object in a package.

Answer: C,E

Explanation:
Oracle synonyms are used to simplify the referencing of complex schema objects:
Option A: Incorrect. A synonym cannot have another synonym; it directly references the base object.
Option B: Incorrect. A synonym does not have an object number as it is merely an alias for another object.
Option C: Correct. Any user with sufficient privileges can create a public synonym, which is accessible to all users in the database.
Option D: Incorrect. All private synonym names must be unique within a schema but not across the entire database.
Option E: Correct. Synonyms can be created for objects within packages, such as procedures or functions, simplifying the referencing of these objects without needing to specify the full package name.

NEW QUESTION # 114
The SQL statements executed in a user session are as follows:

Which two statements describe the consequences of issuing the ROLLBACK TO SAVE POINT a command in the session? (Choose two.)

A. Only the second DELETEstatement is rolled back.
B. The rollback generates an error.
C. No SQL statements are rolled back.
D. Both the DELETEstatements and the UPDATEstatement are rolled back.
E. Only the DELETEstatements are rolled back.

Answer: B,C

NEW QUESTION # 115
View the Exhibit and examine the structure of the PRODUCT_INFORMATION and INVENTORIES tables.

You have a requirement from the supplies department to give a list containing PRODUCT_ID, SUPPLIER_ID, and QUANTITY_ON_HAND for all the products wherein QUANTITY_ON_HAND is less than five.
Which two SQL statements can accomplish the task? (Choose two.)

A. SELECT product_id, quantity_on_hand, supplier_idFROM product_informationNATURAL JOIN inventories AND quantity_on_hand < 5;
B. SELECT i.product_id, i.quantity_on_hand, pi.supplier_idFROM product_information pi JOIN inventories iON (pi.product_id=i.product_id) AND quantity_on_hand < 5;
C. SELECT i.product_id, i.quantity_on_hand, pi.supplier_idFROM product_information pi JOIN inventories iON (pi.product_id=i.product_id)WHERE quantity_on_hand < 5;
D. SELECT i.product_id, i.quantity_on_hand, pi.supplier_idFROM product_information pi JOIN inventories iUSING (product_id) AND quantity_on_hand < 5;

Answer: B,C

NEW QUESTION # 116
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