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Oracle 1Z1-171 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Definition Language (DDL)	- Schema objects 1. Tables and constraints 2. Views and indexes
Topic 2: Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Data integrity considerations 2. Transaction control (COMMIT, ROLLBACK)
Topic 3: Retrieving Data Using SQL	- Joins and Subqueries 1. Correlated and non-correlated subqueries 2. Inner and outer joins - SELECT statements 1. Sorting results with ORDER BY 2. Column selection and expressions 3. Filtering with WHERE clause
Topic 4: 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
Topic 5: 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 (Q93-Q98):

NEW QUESTION # 93
Which command is used to add a new column to an existing table?

A. MODIFY COLUMN
B. ADD COLUMN
C. ALTER COLUMN
D. ALTER TABLE

Answer: D

NEW QUESTION # 94
Which SQL JOIN keyword retrieves all rows from both tables, including those without matches?

A. FULL OUTER JOIN
B. RIGHT
C. LEFT
D. CROSS

Answer: A

NEW QUESTION # 95
What is the primary purpose of an index in SQL?

A. To improve the performance of data retrieval queries
B. To store metadata about a table
C. To enforce data integrity constraints
D. To ensure uniqueness of values in a column

Answer: A

NEW QUESTION # 96
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 departments with no employees
B. Employee IDs from department 10
C. Employees with salaries greater than 10
D. All employee IDs

Answer: D

NEW QUESTION # 97
Which function is used to convert a string to uppercase in SQL?

A. TO_UPPERCASE
B. UPPER
C. CASE_UPPER
D. CONVERT_UPPER

Answer: B

NEW QUESTION # 98
......

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