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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q232-Q237):

NEW QUESTION # 232
View the Exhibit and examine the structure of the CUSTOMERS table.

You want to generate a report showing the last names and credit limits of all customers whose last names start with A, B, or C, and credit limit is below 10,000.
Evaluate the following two queries:
SQL> SELECT cust_last_name, cust_credit_limit FROM customers
WHERE (UPPER(cust_last_name) LIKE 'A%' OR
UPPER (cust_last_name) LIKE 'B%' OR UPPER (cust_last_name) LIKE 'C%')
AND cust_credit_limit < 10000;
SQL>SELECT cust_last_name, cust_credit_limit FROM customers
WHERE UPPER (cust_last_name) BETWEEN 'A' AND 'C'
AND cust_credit_limit < 10000;
Which statement is true regarding the execution of the above queries?

A. Both execute successfully but do not give the required result
B. Only the first query gives the correct result
C. Only the second query gives the correct result
D. Both execute successfully and give the same result

Answer: B

NEW QUESTION # 233
Which three statements are true regarding subqueries?

A. Main query and subquery can get data from different tables.
B. Subqueries can contain GROUP BY and ORDER BY clauses.
C. Multiple columns or expressions can be compared between the main query and subquery.
D. Main query and subquery must get data from the same tables.
E. Only one column or expression can be compared between the main query and subquery.
F. Subqueries can contain ORDER BY but not the GROUP BY clause.

Answer: A,B,C

Explanation:
Explanation
References:
http://docs.oracle.com/javadb/10.6.2.1/ref/rrefsqlj13658.html

NEW QUESTION # 234
Which two statements are true about date/time functions in a session where NLS_DATE_PORMAT is set to DD-MON-YYYY SH24:MI:SS

A. CURRENT_TIMESTAMP returns the same date as CURRENT_DATE.
B. CURRENT_TIMESTAMP returns the same date and time as SYSDATE with additional details of functional seconds.
C. SYSDATE and CURRENT_DATE return the current date and time set for the operating system of the database server.
D. SYSDATE can be used in expressions only if the default date format is DD-MON-RR.
E. SYSDATE can be queried only from the DUAL table.
F. CURRENT_DATE returns the current date and time as per the session time zone

Answer: B,F

NEW QUESTION # 235
Examine the business rule:
Each student can take up multiple projects and each project can have
multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario?

A. The ERD must have a1:M relationship between the students and projects entitles.
B. PROJECT_ID must be the primary key in the projects entity and foreign key in the STUDENTS entity.
C. STUDENT_ID must be the primary key in the STUDENTS entity and foreign key in the projects entity.
D. The ERD must have a M:M relationship between the students and projects entities that must be resolved into 1:M relationships.
E. An associative table must be created with a composite key of STUDENT_ID andPROJECT_ID; which is the foreign key linked to theSTUDENTSandPROJECTSentities.

Answer: B,E

NEW QUESTION # 236
Which two statements are true regarding the GROUP BY clause in a SQL statement? (Choose two.)

A. If the SELECT clause has an aggregate function, then those individual columns without an aggregate function in the SELECT clause should be included in the GROUP BY clause.
B. Using the WHERE clause before the GROUP BY clause excludes the rows before creating groups.
C. Using the WHERE clause after the GROUP BY clause excludes the rows after creating groups.
D. You can use column alias in the GROUP BY clause.
E. The GROUP BY clause is mandatory if you are using an aggregate function in the SELECT clause.

Answer: A,B

NEW QUESTION # 237
......

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