100% Pass Oracle - 1Z1-171 - Latest New Oracle Database 23ai SQL Associate Exam Duration

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Oracle 1Z1-171 Exam Syllabus Topics:

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

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Oracle Database 23ai SQL Associate Sample Questions (Q87-Q92):

NEW QUESTION # 87
What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;

A. Drops the salary column from the employees table
B. Deletes the employees table
C. Sets the salary column to NULL for all rows
D. Removes duplicate rows from the employees table

Answer: A

NEW QUESTION # 88
Which data dictionary view provides information about all tables accessible to the current user?

A. SESSION_TABLES
B. ALL_TABLES
C. USER_TABLES
D. DBA_TABLES

Answer: B

NEW QUESTION # 89
What does a Cartesian product in SQL result from?

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

Answer: C

NEW QUESTION # 90
Which of the following can be achieved using a correlated subquery?

A. Retrieving duplicate records from a single table
B. Joining two tables without a common column
C. Comparing each employee's salary to the average salary of their department
D. Inserting data into a table

Answer: C

NEW QUESTION # 91
Which clause in a SQL SELECT statement is used to define the columns to be retrieved?

A. WHERE
B. SELECT
C. GROUP BY
D. FROM

Answer: B

NEW QUESTION # 92
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