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Oracle 1z1-071 exam mainly focuses on testing the candidates' knowledge and proficiency in SQL database management, including data retrieval, data manipulation, and data control. Additionally, the exam also covers topics like database security, database objects, and basic SQL tuning and optimization techniques. Passing 1z0-071 Exam proves that the candidate has a good understanding of Oracle Database SQL and can apply that knowledge to real-world scenarios.

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Exam Topics

The Oracle 1z0-071 Exam checks the candidates’ expertise in a wide range of technical areas. The description of each topic included in this certification test is outlined below:

Using Conversion Functions & Conditional Expressions: In the framework of this domain, the learners should prove that they are able to apply the COALESCE, NULLIF, NVL functions to data; understand implicit as well as explicit data type conversion; utilize the TO_NUMBER, TO_DATE, and TO_CHAR conversion functions; nest multiple functions.
Sorting & Restricting Data: Here, the applicants must be conversant with implementing precedence rules for the operators within an expression; restricting Rows Returned within the SQL Statement; utilizing Substitution Variables; utilizing VERIFY as well as DEFINE commands.
Using DDL to Handle Tables and Their Relationships: The subject requires the candidates’ skills in explaining and operating with tables; explaining and operating with data types and columns; creating tables; dropping columns as well as setting column UNUSED; truncating tables; creating and utilizing temporary tables; creating and utilizing external tables; handling constraints.
Using Single-Row Functions to Configure Output: The topic encompasses one’s skills in manipulating strings with the character functions within the SQL SELECT as well as WHERE clauses; implementing arithmetic using date data; manipulating numbers with MOD, TRUNC, and ROUND functions; manipulating dates using the date function.
Showcasing Data from Multiple Tables: In the framework of this area, the examinees need to prove their proficiency in utilizing self-joins; utilizing different joins types; utilizing non equijoins; utilizing OUTER joins; describing and utilizing Cartesian products.
Reporting Aggregated Data with the Help of Group Functions: This includes such technical abilities as restricting group results; creating data groups; utilizing group functions.
Understanding Relational Database Concepts: Within this objective, the test takers should demonstrate that they are capable of describing both physical and theoretical relation database aspects; associating the clauses within SQL Select Statement with the ERD components; describing the link between SQL and a database.

Oracle Database SQL Sample Questions (Q152-Q157):

NEW QUESTION # 152
Examine this description of the EMP table:

You execute this query:
SELECT deptno AS "departments", SUM (sal) AS "salary"
FROM emp
GROUP | BY 1
HAVING SUM (sal)> 3 000;
What is the result?

A. only departments where the total salary is greater than 3000, ordered by department
B. an error
C. only departments where the total salary is greater than 3000, returned in no particular order
D. all departments and a sum of the salaries of employees with a salary greater than 3000

Answer: B

NEW QUESTION # 153
Which two statements will convert the string Hello world to ello wozid?

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

Answer: A,B

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 # 154
View the Exhibit and examine the structure of the SALES table.

The following query is written to retrieve all those product IDs from the SALEStable that have more than
55000 sold and have been ordered more than 10 items.

Which statement is true regarding this SQL statement?

A. It executes successfully but produces no result because COUNT(prod_id)should be used instead of COUNT(*).
B. It executes successfully and generates the required result.
C. It produces an error because COUNT (*)should be specified in the SELECTclause also.
D. It produces an error because COUNT (*)should be only in the HAVING clause and not in the WHERE clause.

Answer: D

NEW QUESTION # 155
Which three statements about roles are true?

A. A single user can be assigned multiple roles
B. Roles are assigned to users using the ALTER USER statement
C. Privileges are assigned to a role using the ALTER ROLE statement.
D. A single role can be assigned to multiple users.
E. Privileges are assigned to a role using the GRANT statement.
F. Roles are assigned to roles using the ALTER ROLE Statement
G. A role is a named group of related privileges that can only be assigned to a user

Answer: A,D,E

Explanation:
Roles are named collections of privileges in Oracle databases.
A). False. Roles cannot be assigned to other roles using the ALTER ROLE statement.
B). False. Roles can be assigned to both users and other roles.
C). True. Roles are assigned to users using the ALTER USER statement, but this is not the only method.
D). True. A single role can be assigned to multiple users, simplifying the management of user privileges.
E). True. A single user can be assigned multiple roles.
F). False. Privileges are not assigned to a role using the ALTER ROLE statement.
G). True. Privileges are assigned to a role using the GRANT statement.

NEW QUESTION # 156
Which three statements are correct regarding indexes? (Choose three.)

A. When a table is dropped, corresponding indexes are automatically dropped.
B. A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically attempts to create a unique index.
C. Indexes should be created on columns that are frequently referenced as part of any expression.
D. For each DML operation performed on a table, the corresponding indexes are automatically updated if required.

Answer: A,B,D

Explanation:
Explanation
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/

NEW QUESTION # 157
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