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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q279-Q284):

NEW QUESTION # 279
SCOTT is a user in the database.
Evaluate the commands issued by the DBA:

Which statement is true regarding the execution of the above commands?

A. Statement 1 would not execute because the WITH GRANT option is missing.
B. Statement 2 would not execute because system privileges and object privileges cannot be granted together in a single GRANT command.
C. Statement 3 would not execute because role and system privileges cannot be granted together in a single GRANT statement.
D. Statement 1 would not execute because the IDENTIFIED BY <password> clause is missing.

Answer: B

NEW QUESTION # 280
Which two statements are true about conditional INSERT ALL?

A. It cannot have an ELSE clause.
B. Each row returned by the subquery can be inserted into only a single target table.
C. The total number of rows inserted is always equal to the number of rows returned by the subquery
D. A single WHEN condition can be used for multiple INTO clauses.
E. Each WHEN condition is tested for each row returned by the subquery.

Answer: C,E

NEW QUESTION # 281
Which three statements are true about the DESCRIBE command? (Choose three.)

A. It displays the PRIMARY KEY constraint for any column or columns that have that constraint
B. It displays all constraints that are defined for each column
C. It can be used from SQL Developer
D. It can be used to display the structure of an existing view
E. It displays the NOT NULL constraint for any columns that have that constraint
F. It can be used only from SQL*Plus

Answer: D,E,F

NEW QUESTION # 282
Which is true about the & and && prefixes with substitution variables?

A. An & prefix to an undefined substitution variable, which is referenced twice in the same query, will prompt for a value twice .
B. & can prefix a substitution variable name only in queries. DML
C. The && prefix will not prompt for a value even if the substitution variable is not previously defined in the session.
D. An && prefix to an undefined substitution variable, which is referenced multiple times in multiple queries, will prompt for a value once per query.
E. Both & and && can prefix a substitution variable name in queries and DML statements.

Answer: A,E

NEW QUESTION # 283
Examine the ORDER _ITEms table:

Which two queries return rows where QUANTITY is a multiple of ten?

A. SELECT FROM order_ items WHERE quantity / 10 = TRUNC (quantity);
B. SELECT" FROM order_ items WHERE FLOOR (quantity / 10) = TRUNC (quantity / 10);
C. SELECT" FROM order_ _items WHERE quantity = ROUND (quantity, 1);
D. SELECT * FROM order_ items WHERE MOD (quantity, 10) = 0;
E. SELECT * FROM order_ items WHERE quantity = TRUNC (quantity, -1);

Answer: D,E

NEW QUESTION # 284
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