1z0-071 Latest Mock Exam, Valid 1z0-071 Test Discount

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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q164-Q169):

NEW QUESTION # 164
The SYSDATEfunction displays the current Oracle Server date as:
21-MAY-19
You wish to display the date as:
MONDAY, 21 MAY, 2019
Which statement will do this?

A. SELECT TO_DATE(SYSDATE, 'FMDAY, DD MONTH, YYYY') FROM DUAL;
B. SELECT TO_CHAR(SYSDATE, 'FMDD, DAY MONTH, YYYY') FROM DUAL;
C. SELECT TO_CHAR(SYSDATE, 'FMDAY, DD MONTH, YYYY') FROM DUAL;
D. SELECT TO_CHAR(SYSDATE, 'FMDAY, DDTH MONTH, YYYY') FROM DUAL;

Answer: C

Explanation:
SELECT ID, TO_CHAR(Start_Date,'fmDay Month fmDD, YYYY') AS "Start Date" FROM Employee; Reference: http://www.java2s.com/Code/Oracle/Data-Type/ TOCHARDatefmDayMonthfmDDYYYYEmbeddedspacescanberemovedbyplacingthefmprefix.htm

NEW QUESTION # 165
Examine the following query:

What is the output of this query?

A. It results in an error because the ORDER BY clause should be the last clause.
B. It displays the first 5 percent of the rows from the SALES table.
C. It displays 5 percent of the products with the lowest amount sold.
D. It displays 5 percent of the products with the highest amount sold.

Answer: C

NEW QUESTION # 166
Examine this description of the PRODUCTS table:

You successfully execute this command:

Which two statements execute without errors?

A. Option C
B. Option D
C. Option A
D. Option B

Answer: D

NEW QUESTION # 167
Which three statements are true about performing DML operations on a view with no Instead of triggers defined?

A. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCT keyword.
B. Insert statements can always be done on a table through a view.
C. Delete statements can always be done on a table tough a view.
D. Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values which are not referenced in the defining query of the view.
E. Views cannot be used to query rows from an underlying table if the table has a PRIMARY KEY and the PRIMARY KEY columns are not referenced in the defining query of the view.
F. WITH CHECK clause has no effect when deleting rows from the underlying table through the view.

Answer: A,D,E

NEW QUESTION # 168
Which three queries use valid expressions?

A. SELECT product_id,(unit_price * 0.15 / (4.75 + 552.25)) FROM products;
B. SELECT product_id,unit_price || 5 "Discount" , unit_price + surcharge - discount FROM products;
C. SELECT product_id,(expiry_date - delivery_date) * 2 FROM products;
D. SELECT product_id, expiry_date * 2 from products;
E. SELECT product_id,unit_price,5 "Discount", unit_price + surcharge-discount FROM products;
F. SELECT product_id, unit_price, unit_price + surcharge FROM products;

Answer: A,C,F

NEW QUESTION # 169
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