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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q335-Q340):

NEW QUESTION # 335
View the exhibit and examine the description for the SALES and CHANNELS tables.

You issued this SQL statement:

Which statement is true regarding the result?

A. The statement will execute and a new row will be inserted in the SALES table.
B. The statement will fail because the subquery in the VALUES clause is not enclosed within single quotation marks.
C. The statement will fail because the VALUES clause is not required with a subquery.
D. The statement will fail because a subquery cannot be used in a VALUES clause.

Answer: A

NEW QUESTION # 336
Which two statements are true about the ORDER BY clause when used with a SQL statement containing a SET operator such as UNION?

A. 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.
B. Only column names from the first SELECT statement in the compound query are recognized.
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. Each SELECT statement in the compound query must have its own ORDER BY clause.

Answer: A,B

NEW QUESTION # 337
Examine thestructureof the members table:

You want to display details of all members who reside in states starting with the letter A followed by exactly one character.
Which SQL statement must you execute?

A. SELECT * FROM MEMBERS WHERE state LIKE 'A%';
B. SELECT * FROM MEMBERS WHERE state LIKE 'A_*;
C. SELECT * FROM MEMBERS WHERE state LIKE '%A_* ;
D. SELECT * FROM MEMBERS WHERE state LIKE 'A_%';

Answer: C

NEW QUESTION # 338
Which three statements are true regarding subqueries?

A. Subqueries can contain ORDER BY but not the GROUP BY clause.
B. Main query and subquery must get data from the same tables.
C. Only one column or expression can be compared between the main query and subquery.
D. Subqueries can contain GROUP BY and ORDER BY clauses.
E. Main query and subquery can get data from different tables.
F. Multiple columns or expressions can be compared between the main query and subquery.

Answer: D,E,F

Explanation:
References:
http://docs.oracle.com/javadb/10.6.2.1/ref/rrefsqlj13658.html

NEW QUESTION # 339
Which two statements are true about the rules of precedence for operators? (Choose two.)

A. The + binary operator has the highest precedence in an expression in a SQL statement
B. The concatenation operator | | is always evaluated before addition and subtraction in an expression
C. Multiple parentheses can be used to override the default precedence of operators in an expression
D. NULLS influence the precedence of operators in an expression
E. Arithmetic operators with equal precedence area evaluated from left to right within an expression

Answer: A,C

NEW QUESTION # 340
......

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