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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q185-Q190):

NEW QUESTION # 185
Which four statements are true about constraints on Oracle tables?

A. A Column can have only one CHECK Constraint.
B. A FOREIGN KEY Column can contain NULLS.
C. A UNIQUE constraint permits NULLS.
D. A UNIQUE Constraint can use a pre-existing index on the constrained column or columns.
E. A PRIMARY KEY Constraint can be added after a table has been created and populated.
F. A NOT NULL Constraint can be defined at the table level.
G. A CHECK Constraint can refer to values in other rows.

Answer: B,C,D,E

NEW QUESTION # 186
You execute the following commands:

For which substitution variables are you prompted for the input?

A. Only 'mgr_id'
B. None, because no input required
C. Only 'hiredate'
D. Both the substitution variables 'hiredate' and 'mgr_id\

Answer: A

Explanation:
SQL> define hiredate = '01-APR-2011'
SQL> select employee_id, first_name, salary
2 from employees
3 where hire_date > '&hiredate'
4 and manager_id > &mgr_id;
old 3: where hire_date > '&hiredate'
new 3: where hire_date > '01-APR-2011'
Enter value for mgr_id: 13
old 4: and manager_id > &mgr_id
new 4: and manager_id > 13
no rows selected

NEW QUESTION # 187
Examine this query which executes successfully;
Select job,deptno from emp
Union all
Select job,deptno from jobs_history;
What will be the result?

A. It will return rows common to both select statements.
B. It will return rows from both select statements after eliminating duplicate rows.
C. It will return rows that are not common to both select statements.
D. It will return rows both select statements including duplicate rows.

Answer: D

NEW QUESTION # 188
View the Exhibit and examine the structure of ORDERS and ORDER_ITEMS tables.
ORDER_ID is the primary key in the ORDERS table and the foreign key of the ORDER_ITEMS table, whose constraint is defined with the ON DELETE CASCADE option.
Which DELETE statement would execute successfully?

A. DELETE orders o, order_items iWHERE o.order_id = i.order_id;
B. DELETE ordersWHERE order_total < 1000;
C. DELETE order_idFROM ordersWHERE order_total < 1000;
D. DELETEFROM ordersWHERE (SELECT order_idFROM order_items);

Answer: B

NEW QUESTION # 189
Which three statements are true reading subqueries? (Choose three.)

A. Only one column or expression can be compared between the subquery and main query.
B. A subquery can have more than one main query.
C. The subquery and main query can retrieve data from different tables.
D. The subquery and main query must retrieve date from the same table.
E. Multiple columns or expressions can be compared between the subquery and main query.
F. A Main query can have many subqueries.

Answer: C,E,F

Explanation:
Explanation/Reference:

NEW QUESTION # 190
......

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