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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q233-Q238):

NEW QUESTION # 233
View the exhibit and examine the description of the DEPARTMENTSand EMPLOYEEStables.

You wrote this SQL statement to retrieve EMPLOYEE_ID, FIRST_NAME, and DEPARTMENT NAME, for all employees:
SELECT employee_id, first_name, department_name
FROM employees
NATURAL JOIN departments;
The desired output is not obtained after executing the above SQL statement. What could be the reason for this?

A. The DEPARTMENTStable is not used before the EMPLOYEEStable in the FROMclause.
B. The NATURAL JOINclause is missing the USINGclause.
C. The EMPLOYEESand DEPARTMENTStables have more than one column with the same column name and data type.
D. The table prefix is missing for the column names in the SELECTclause.

Answer: C

Explanation:
Natural join needs only one column to be the same in each table. The EMPLOYEESand DEPARTMENTStables have two columns that are the same (Department_ID and Manager_ID)

NEW QUESTION # 234
Examine the structure of the invoice table.

Which two SQL statements would execute successfully? A)

B)

C)

D)

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

Answer: A

NEW QUESTION # 235
View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTSand TIMEStables.

The PROD_IDcolumn is the foreign key in the SALEStable, which references the PRODUCTStable.
Similarly, the CUST_IDand TIME_IDcolumns are also foreign keys in the SALEStable referencing the CUSTOMERSand TIMEStables, respectively.
Evaluate the following CREATE TABLEcommand:
CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true regarding the above command?

A. The NEW_SALEStable would not get created because the column names in the CREATETABLE command and the SELECTclause do not match.
B. The NEW_SALEStable would get created and all the NOTNULLconstraints defined on the specified columns would be passed to the new table.
C. The NEW_SALEStable would not get created because the DEFAULTvalue cannot be specified in the column definition.
D. The NEW_SALEStable would get created and all the FOREIGNKEYconstraints defined on the specified columns would be passed to the new table.

Answer: B

NEW QUESTION # 236
Which two statements are true about Oracle databases and SQL?

A. A user can be the owner of multiple schemas In the same database.
B. The database guarantees read consistency at select level on user-created tablers.
C. Updates performed by a database user can be rolled back by another user by using the ROLLBACK command.
D. When you execute an UPDATE statement, the database instance locks each updated row.
E. A query can access only tables within the same schema.

Answer: B,D

NEW QUESTION # 237
View the exhibits and examine the structures of the COSTSand PROMOTIONStables.

Evaluate the following SQL statement:

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 # 238
......

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