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Oracle 1z0-071 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Manipulation and Schema Objects	- DML operations 1. INSERT, UPDATE, DELETE, MERGE - DDL operations 1. CREATE, ALTER, DROP tables and constraints
Topic 2: Relational Database Concepts	- Data types and database objects overview - Tables, rows, columns, and relational model basics
Topic 3: SQL Functions	- Conversion and conditional functions 1. TO_CHAR, TO_NUMBER, CASE expressions - Single-row functions 1. Character, numeric, date functions
Topic 4: SQL Retrieval	- SELECT statements and filtering data 1. ORDER BY and row limiting 2. WHERE clause and conditions - Joins and set operations 1. INNER, OUTER, CROSS joins 2. UNION, INTERSECT, MINUS
Topic 5: Subqueries and Advanced SQL	- Single-row and multi-row subqueries - Correlated subqueries and nested queries

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Oracle Database SQL Sample Questions (Q403-Q408):

NEW QUESTION # 403
Which two statements are true regarding constraints?

A. A constraint can be disabled even if the constraint column contains data.
B. A foreign key cannot contain null values.
C. All constraints can be defined at the column level as well as the table level.
D. A constraint is enforced only for the insert operation on a table.
E. A column with the unique constraint can contain null values.

Answer: A,E

NEW QUESTION # 404
View the exhibits and examine the structures of the COSTSand PROMOTIONStables.

Evaluate the following SQL statement:
SQL> SELECT prod_id FROM costs
WHERE promo_id IN (SELECT promo_id FROM promotions
WHERE promo_cost < ALL
( SELECT MAX(promo_cost) FROM promotions
GROUP BY (promo_end_date-
promo_begin_date)));
What would be the outcome of the above SQL statement?

A. It displays prod IDs in the promos with the lowest cost in the same time interval.
B. It displays prod IDs in the promos with the highest cost in the same time interval.
C. It displays prod IDs in the promos which cost less than the highest cost in the same time interval.
D. It displays prod IDs in the promo with the lowest cost.

Answer: C

NEW QUESTION # 405
You want to display the date for the first Monday of the next month and issue the following command:

What is the outcome?

A. It executes successfully and returns the correct result.
B. In generates an error because TO_CHARshould be replaced with TO_DATE.
C. In generates an error because fmand double quotation marks should not be used in the format string.
D. In generates an error because rrrrshould be replaced by rrin the format string.
E. It executes successfully but does not return the correct result.

Answer: A

NEW QUESTION # 406
View the Exhibit and examine the details of the ORDER_ITEMS table.

Evaluate the following SQL statements:
Statement 1:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which statements are true regarding the output of these SQL statements? (Choose all that apply.)

A. Statement 1 would return only one row of output.
B. Both statements would ignore NULL values for the UNIT_PRICE and QUANTITY columns.
C. Statement 1 would not return give the same output.
D. Both the statements would give the same output.
E. Statement 2 would return multiple rows of output.

Answer: A,B,E

NEW QUESTION # 407
Which two statements are true about Oracle synonyms?

A. All private synonym names must be unique in the database.
B. Any user can create a public synonym.
C. A synonym can be created on an object in a package.
D. A synonym has an object number.
E. A synonym can have a synonym.

Answer: B,C

Explanation:
Oracle synonyms are used to simplify the referencing of complex schema objects:
* Option A: Incorrect. A synonym cannot have another synonym; it directly references the base object.
* Option B: Incorrect. A synonym does not have an object number as it is merely an alias for another
* object.
* Option C: Correct. Any user with sufficient privileges can create a public synonym, which is accessible to all users in the database.
* Option D: Incorrect. All private synonym names must be unique within a schema but not across the entire database.
* Option E: Correct. Synonyms can be created for objects within packages, such as procedures or functions, simplifying the referencing of these objects without needing to specify the full package name.

NEW QUESTION # 408
......

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