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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Retrieving Data Using the SQL SELECT Statement	5%	- Differentiate between SQL statements and SQL*Plus commands - Execute a basic SELECT statement - List the capabilities of SQL SELECT statements
Manipulating Data	14%	- Update rows in a table - Insert rows into a table - Delete rows from a table - Control transactions - Describe each data manipulation language (DML) statement
Working with Oracle Database SQL	8%	- Explain the installation of Oracle Database software - Describe the Oracle Database architecture - Create a container database - Start up and shut down a database
Creating Other Schema Objects	10%	- Create, modify, and retrieve data from a view - Create, maintain, and use sequences - Create and maintain indexes - Create synonyms for database objects
Using Conversion Functions and Conditional Expressions	10%	- Describe implicit and explicit data type conversion - Use conditional IF THEN ELSE logic in a SELECT statement - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Apply the NVL, NULLIF, and COALESCE functions to data
Using Single-Row Functions to Customize Output	10%	- Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate dates with the date functions - Describe the differences between single-row and multiple-row functions - Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data
Using Subqueries to Solve Queries	15%	- Define subqueries - List the types of subqueries - Write single-row and multi-row subqueries - Describe the types of problems that subqueries can solve
Restricting and Sorting Data	6%	- Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime
Using DDL Statements to Create and Manage Tables	14%	- Create a simple table - Drop, rename, and truncate tables - Categorize the main database objects - Describe the data types that are available for columns - Review the table structure - Alter table definitions
Reporting Aggregated Data Using Group Functions	15%	- Include or exclude grouped rows by using the HAVING clause - Group data by using the GROUP BY clause - Identify the available group functions - Describe the use of group functions
Controlling User Access	5%	- Differentiate system privileges from object privileges - Distinguish between granting privileges and roles - Grant privileges on tables and on a view
Using Set Operators	5%	- Use a set operator to combine multiple queries into a single query - Describe set operators - Describe the order of precedence when the set operators are used
Displaying Data from Multiple Tables Using Joins	15%	- Cross join tables - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - View data that does not meet a join condition by using outer joins - Join a table to itself by using a self-join

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Oracle Database SQL Sample Questions (Q34-Q39):

NEW QUESTION # 34
Which two are true about the data dictionary? (Choose two.)

A. All user actions are recorded in the data dictionary.
B. Base tables in the data dictionary have the prefix DBA_.
C. All users have permissions to access all information in the data dictionary by default.
D. The data dictionary is constantly updated to reflect changes to database objects, permissions, and data.
E. The SYSuser owns all base tables and user-accessible views in the data dictionary.

Answer: B,E

Explanation:
Explanation/Reference: https://docs.oracle.com/cd/B28359_01/server.111/b28318/datadict.htm#CNCPT1215

NEW QUESTION # 35
View the Exhibit and examine the structure of the CUSTOMERS table.

You want to generate a report showing the last names and credit limits of all customers whose last names start with A, B, or C, and credit limit is below 10,000.
Evaluate the following two queries:
SQL> SELECT cust_last_name, cust_credit_limit FROM customers
WHERE (UPPER(cust_last_name) LIKE 'A%' OR
UPPER (cust_last_name) LIKE 'B%' OR UPPER (cust_last_name) LIKE 'C%')
AND cust_credit_limit < 10000;
SQL>SELECT cust_last_name, cust_credit_limit FROM customers
WHERE UPPER (cust_last_name) BETWEEN 'A' AND 'C'
AND cust_credit_limit < 10000;
Which statement is true regarding the execution of the above queries?

A. Only the second query gives the correct result
B. Both execute successfully and give the same result
C. Only the first query gives the correct result
D. Both execute successfully but do not give the required result

Answer: C

NEW QUESTION # 36
Examine the description of the BOOKS table:

The table has 100 rows.
Examine this sequence of statements issued in a new session;
INSERT INTO BOOKS VALUES ('ADV112' , 'Adventures of Tom Sawyer', NULL, NULL); SAVEPOINT a; DELETE from books; ROLLBACK TO SAVEPOINT a; ROLLBACK; Which two statements are true?

A. The first ROLLBACK command restores the 101 rows that were deleted and commits the inserted row.
B. The second ROLLBACK command undoes the insert.
C. The second ROLLBACK command replays the delete.
D. The second ROLLBACK command does nothing.
E. The first ROLLBACK command restores the 101 rows that were deleted, leaving the inserted row still to be committed.

Answer: B,D

Explanation:
B: True. The second ROLLBACK command would not do anything because the first ROLLBACK TO SAVEPOINT a; already undid the delete operation, and there was no other DML operation between the first and the second ROLLBACK.
E: True. The second ROLLBACK command undoes the insert because after the first ROLLBACK TO SAVEPOINT a; there are no savepoints defined, so a subsequent ROLLBACK would undo all transactions to the beginning of the current session or last COMMIT.
The ROLLBACK command is used to undo transactions that have not yet been committed. Rolling back to a savepoint only undoes transactions up to that savepoint, and a subsequent ROLLBACK without a savepoint name will undo all uncommitted changes since the last COMMIT.
Reference:
Oracle SQL documentation on the ROLLBACK statement provides details on how it interacts with savepoints and the effects it has on the transactions within a session.

NEW QUESTION # 37
Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You must design an Entity Relationship (ER) model for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true? (Choose two.)

A. PROJECT_IDmust be the primary key in the PROJECTSentity and foreign key in the STUDENTSentity.
B. The ER must have a 1-to-many relationship between the STUDENTSand PROJECTSentities.
C. The ER must have a many-to-many relationship between the STUDENTSand PROJECTS entities that must be resolved into 1-to-many relationships.
D. An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.
E. STUDENT_IDmust be the primary key in the STUDENTSentity and foreign key in the PROJECTSentity.

Answer: C,D

Explanation:
Explanation/Reference:
References:
http://www.oracle.com/technetwork/issue-archive/2011/11-nov/o61sql-512018.html

NEW QUESTION # 38
View the Exhibit and examine the data in the employees table.

You want to generate a report showing the total compensation paid to each employee to date.
You issue the following query:

What is the outcome?

A. It executes successfully but does not give the correct output.
B. It generates an error because the alias is not valid.
C. It executes successfully and gives the correct output.
D. It generates an error because the usage of the round function in the expression is not valid
E. It generates an error because the concatenation operator can be used to combine only two items.

Answer: A

NEW QUESTION # 39
......

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