1Z1-171 Latest Braindumps Ppt & 1Z1-171 Valid Dumps Ppt

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Oracle 1Z1-171 Exam Syllabus Topics:

Section	Objectives
Advanced SQL Features	- Set operators and functions 1. UNION, INTERSECT, MINUS 2. Single-row and group functions - Aggregations and grouping 1. GROUP BY and HAVING 2. Aggregate functions
Data Definition Language (DDL)	- Schema objects 1. Views and indexes 2. Tables and constraints
Retrieving Data Using SQL	- Joins and Subqueries 1. Inner and outer joins 2. Correlated and non-correlated subqueries - SELECT statements 1. Column selection and expressions 2. Filtering with WHERE clause 3. Sorting results with ORDER BY
Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Transaction control (COMMIT, ROLLBACK) 2. Data integrity considerations
Relational Database Concepts	- Database fundamentals and relational model 1. Tables, rows, columns, and keys 2. Entity relationships and normalization basics

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Oracle Database 23ai SQL Associate Sample Questions (Q14-Q19):

NEW QUESTION # 14
Which SQL function can be used to replace NULL values with a specified value?

A. COALESCE
B. ISNULL
C. REPLACE
D. NVL

Answer: D

NEW QUESTION # 15
What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);

A. Employee IDs from department 10
B. Employee IDs from departments with no employees
C. Employees with salaries greater than 10
D. All employee IDs

Answer: D

NEW QUESTION # 16
What will the following query do?
DELETE FROM employees
WHERE department_id = 20;

A. Raise an error because DELETE cannot use a WHERE clause
B. Delete the department_id column in the employees table
C. Delete all rows in the employees table
D. Delete all rows where department_id is 20

Answer: D

NEW QUESTION # 17
Which operator can be used in a multiple-row subquery to match a single value to a list of values?

A. EXISTS
B. NOT NULL
C. IN
D. =

Answer: C

NEW QUESTION # 18
What does a Cartesian product in SQL result from?

A. An INNER JOIN without specifying join conditions
B. An OUTER JOIN with NULL values
C. A NATURAL JOIN without specifying join conditions

Answer: A

NEW QUESTION # 19
......

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