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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q379-Q384):

NEW QUESTION # 379
View the Exhibits and examine the structure of the COSTSand PROMOTIONStables.
You want to display PROD_IDSwhose promotion cost is less than the highest cost PROD_IDin a promotion time interval.
Examine this SQL statements:

What will be the result?
Exhibit 1.

Exhibit 2.

A. It executes successfully but does not give the required result
B. It gives an error because the ALL keyword is not valid
C. It executes successfully and gives the required result
D. It gives an error because the GROUP BY clause is not valid

Answer: C

NEW QUESTION # 380
Which statement is true about the INTERSECT operator used in compound queries?

A. INTERSECT is of lower precedence than UNION or UNION ALL.
B. Multiple INTERSECT operators are not possible in the same SQL statement.
C. It ignores NULLs.
D. It processes NULLs in the selected columns.

Answer: D

NEW QUESTION # 381
Which two statements will convert the string Hello world to ello wozid?

A. SELECT LOWER(TRIM('H' FROM 'Hello World')) FROM DUAL;
B. SELECT LOWER (SUBSTR('Hello World, 2, 1)) FROM DUAL;
C. SELECT LOWER (SUBSTR('Hello World', 2)) FROM DUAL;
D. SELECT SUBSTR('Hello world', 2) FROM DUAL;
E. SELECT INITCAP(TRIM('H' FROM 'Hello World')) FROM DUAL;

Answer: C,D

Explanation:
To convert the string "Hello World" to "ello wozid":
* Option B: SELECT LOWER(SUBSTR('Hello World', 2)) FROM DUAL;
* This will remove the first character and convert the rest to lowercase, but it will not change the
'rld' to 'zid'.
* Option D: SELECT SUBSTR('Hello world', 2) FROM DUAL;
* This will remove the first character, but the rest of the string remains unchanged and not converted to lowercase.
Options A, C, and E are incorrect because:
* Option A: SUBSTR is incorrect here because it is only getting one character instead of the entire string minus the first character.
* Option C: While TRIM removes the 'H', LOWER converts all characters to lowercase, but it doesn't address the 'rld' to 'zid' change.
* Option E: INITCAP and TRIM will not achieve the desired conversion of 'rld' to 'zid'.

NEW QUESTION # 382
Examine the data in the COLORStable:

Examine the data in the BRICKStable:

Which two queries return all the rows from COLORS? (Choose two.)

Answer: C,E

NEW QUESTION # 383
View the Exhibits and examine PRODUCTS and SALES tables.

You issue the following query to display produce name and the number of times the product has been sold:
SQL>SLECT p. PROD_name, i . item _cnt
FROM (SELECT prod_id =, count (*) item_cnt
FROMm sales
GROUP BY prod_id) I RIGHT OUTER JION products p
On i. prod _id =.prod_id;
What happens when the above statement is executed?

A. The statement produces an error ITEM_CNT cannot be displayed in the outer query.
B. The statement produce an error because a subquery in the FROM clause and outer-jions cannot be together.
C. The statement produces an error because the GROUP By clause cannot be usesd in a subquery in the FROM clause.
D. the statement executes successfully and produces the required output.

Answer: D

NEW QUESTION # 384
......

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