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Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Using Subqueries to Solve Queries	15%	- Define subqueries - Describe the types of problems that subqueries can solve - List the types of subqueries - Write single-row and multi-row subqueries
Topic 2: 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 - Describe the use of group functions - Identify the available group functions
Topic 3: 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
Topic 4: Controlling User Access	5%	- Grant privileges on tables and on a view - Differentiate system privileges from object privileges - Distinguish between granting privileges and roles
Topic 5: Restricting and Sorting Data	6%	- Limit the rows that are retrieved by a query - Sort the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime - Use DEFINE and UNDEFINE commands
Topic 6: Displaying Data from Multiple Tables Using Joins	15%	- View data that does not meet a join condition by using outer joins - Join a table to itself by using a self-join - Cross join tables - Write SELECT statements to access data from more than one table using equijoins and non-equijoins
Topic 7: Using DDL Statements to Create and Manage Tables	14%	- Categorize the main database objects - Create a simple table - Alter table definitions - Drop, rename, and truncate tables - Review the table structure - Describe the data types that are available for columns
Topic 8: Working with Oracle Database SQL	8%	- Describe the Oracle Database architecture - Create a container database - Start up and shut down a database - Explain the installation of Oracle Database software
Topic 9: 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
Topic 10: Using Conversion Functions and Conditional Expressions	10%	- Describe implicit and explicit data type conversion - Apply the NVL, NULLIF, and COALESCE functions to data - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Use conditional IF THEN ELSE logic in a SELECT statement
Topic 11: Using Single-Row Functions to Customize Output	10%	- Describe the differences between single-row and multiple-row functions - Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate dates with the date functions - Perform arithmetic with date data - Manipulate numbers with the ROUND, TRUNC, and MOD functions
Topic 12: 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
Topic 13: Creating Other Schema Objects	10%	- Create and maintain indexes - Create, maintain, and use sequences - Create, modify, and retrieve data from a view - Create synonyms for database objects

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Oracle Database SQL Sample Questions (Q54-Q59):

NEW QUESTION # 54
Which three statements are true about single-row functions?

A. They can be nested to any level.
B. They can accept only one argument.
C. They return a single result row per table.
D. They can be used only in the WHERE clause of a SELECT statement.
E. The data type returned can be different from the data type of the argument.
F. The argument can be a column name, variable, literal or an expression.

Answer: A,E,F

Explanation:
Single-row functions in SQL return one result per row, and the following statements are true:
A: The data type of the returned value can indeed be different from the data type of the argument provided to the function. For example, the TO_CHAR function can take a numeric input and return a character string.
B: Single-row functions can be nested within each other to any level that is supported by Oracle. This means you can have a function call as an argument to another function, and so on.
E: The argument to a single-row function can be a column name, a variable, a literal, or an expression. This flexibility allows these functions to be very powerful in SQL expressions.
The incorrect options are:
C: Single-row functions do not return a single result row per table; they return a result for each row that is processed.
D: They are not limited to accepting only one argument. Some functions, like NVL, accept multiple arguments.
F: They are not limited to use in the WHERE clause; single-row functions can be used in any part of a SQL statement, including SELECT and ORDER BY clauses.
Reference:
Oracle Documentation on Single-Row Functions: SQL Functions

NEW QUESTION # 55
View the exhibit and examine the ORDERS table.
ORDERS
Name
Null?
Type
ORDER ID
NOT NULL
NUMBER(4)
ORDATE DATE
DATE
CUSTOMER ID
NUMBER(3)
ORDER TOTAL
NUMBER(7,2)
The ORDERS table contains data and all orders have been assigned a customer ID. Which statement would add a NOT NULL constraint to the CUSTOMER_ID column?

A. ALTER TABLE ordersADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;
B. ALTER TABLE ordersMODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
C. ALTER TABLE ordersADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
D. ALTER TABLE ordersMODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);

Answer: D

NEW QUESTION # 56
Which two statements are true regarding a SAVEPOINT? (Choose two.)

A. Rolling back to a SAVEPOINTcan undo a CREATE INDEX statement
B. A SAVEPOINTdoes not issue a COMMIT
C. Rolling back to a SAVEPOINTcan undo a DELETEstatement
D. Rolling back to a SAVEPOINT can undo a TRUNCATEstatement
E. Only one SAVEPOINTmay be issued in a transaction

Answer: B,C

NEW QUESTION # 57
Examine the description of the EMPLOYEES table:

Which statement will execute successfully, returning distinct employees with non-null first names?

A. SELECT first_ name, DISTNCT last_ name FROM employees WHERE first_ name IS NOT NULL;
B. SELECT DISTINCT * FROM employees WHERE first_ name IS NOT NULL;
C. SELECT first_ name, DISTINCT last_ name FROM employees WHERE first_ name < > NULL;
D. SELECT Distinct * FROM employees WHERE first_ name < > NULL;

Answer: B

NEW QUESTION # 58
View the Exhibit and examine the structure in the DEPARTMENTS tables. (Choose two.)

Examine this SQL statement:
SELECT department_id "DEPT_ID", department_name, 'b' FROM
departments
WHERE departments_id=90
UNION
SELECT department_id, department_name DEPT_NAME, 'a' FROM
departments
WHERE department_id=10
Which two ORDER BY clauses can be used to sort the output?

A. ORDER BY 3;
B. ORDER BY DEPT_NAME;
C. ORDER BY 'b';
D. ORDER BY DEPT_ID;

Answer: A,D

NEW QUESTION # 59
......

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