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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q388-Q393):

NEW QUESTION # 388
Examine the structure of the BOOKS_TRANSACTIONStable.

You want to update this table such that BOOK_IDis set to 'INVALID'for all rows where no MEMBER_ID has been entered.
Examine this partial SQL statement:

Which condition must be used in the WHEREclause to perform the required update?

A. MEMBER_ID = NULL;
B. MEMBER_ID IS NULL;
C. MEMBER_ID = '';
D. MEMBER_ID = "";

Answer: B

NEW QUESTION # 389
Which two statements are true about a full outer join?

A. It returns matched and unmatched rows from both tables being joined.
B. It returns only unmatched rows from both tables being joined.
C. The Oracle join operator (+) must be used on both sides of the join condition in the WHERE clause.
D. It includes rows that are returned by a Cartesian product.
E. It includes rows that are returned by an inner join.

Answer: A,E

Explanation:
In Oracle Database 12c, regarding a full outer join:
* A. It includes rows that are returned by an inner join. This is true. A full outer join includes all rows from both joined tables, matching wherever possible. When there's a match in both tables (as with an inner join), these rows are included.
* D. It returns matched and unmatched rows from both tables being joined. This is correct and the essence of a full outer join. It combines the results of both left and right outer joins, showing all rows from both tables with matching rows from the opposite table where available.
Options B, C, and E are incorrect:
* B is incorrect because the Oracle join operator (+) is used for syntax in older versions and cannot implement a full outer join by using (+) on both sides. Proper syntax uses the FULL OUTER JOIN keyword.
* C is incorrect as a Cartesian product is the result of a cross join, not a full outer join.
* E is incorrect because it only describes the scenario of a full anti-join, not a full outer join.

NEW QUESTION # 390
Which statement is true regarding the default behavior of the ORDER BY clause?

A. Column aliases can be used in the ORDER BY clause.
B. In a character sort, the values are case-sensitive.
C. Only columns that are specified in the SELECT list can be used in the ORDER BY clause.
D. NULLs are not included in the sort operation.
E. Numeric values are displayed in descending order if they have decimal positions.

Answer: B

Explanation:
The ORDER BY clause performs case sensitive sorting with character values.

NEW QUESTION # 391
Examine this SELECT statement and view the Exhibit to see its output: (Choose two.) SELECT constraints_name, constraints_type, search_condition, r_constraints_name, delete_rule, status, FROM user_constraints WHERE table_name = 'ORDERS'; Which two statements are true about the output?

A. The R_CONSTRAINT_NAME column contains an alternative name for the constraint.
B. The STATUS column indicates whether the table is currently in use.
C. In the second column, 'c' indicates a check constraint.
D. The DELETE_RULE column indicates the desired state of related rows in the child table when the corresponding row is deleted from the parent table.

Answer: C,D

NEW QUESTION # 392
View the Exhibit and examine the structure of ORDERSand ORDER_ITEMStables.
ORDER_IDis the primary key in the ORDERStable. It is also the foreign key in the ORDER_ITEMStable wherein it is created with the ON DELETE CASCADEoption.
Which DELETEstatement would execute successfully?

A. DELETE orders o, order_items I
WHERE o.order_id = i.order_id;
B. DELETE orders
WHERE order_total < 1000;
C. DELETE
FROM orders
WHERE (SELECT order_id
FROM order_items);
D. DELETE order_id
FROM orders
WHERE order_total < 1000;

Answer: C

NEW QUESTION # 393
......

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