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Oracle 1Z0-171 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. Transaction control (COMMIT, ROLLBACK) 2. Data integrity considerations
Topic 3: Advanced SQL Features	- Set operators and functions 1. Single-row and group functions 2. UNION, INTERSECT, MINUS - Aggregations and grouping 1. GROUP BY and HAVING 2. Aggregate functions
Topic 4: Relational Database Concepts	- Database fundamentals and relational model 1. Tables, rows, columns, and keys 2. Entity relationships and normalization basics
Topic 5: Retrieving Data Using SQL	- Joins and Subqueries 1. Inner and outer joins 2. Correlated and non-correlated subqueries - SELECT statements 1. Sorting results with ORDER BY 2. Column selection and expressions 3. Filtering with WHERE clause

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Oracle Database 23ai SQL Associate Sample Questions (Q50-Q55):

NEW QUESTION # 50
Which function is used to extract the year from a date in SQL?

A. YEAR(date)
B. TO_YEAR(date)
C. GET_YEAR(date)
D. EXTRACT(YEAR FROM date)

Answer: D

NEW QUESTION # 51
How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?

A. LOCALTIMESTAMP returns only the date, while CURRENT_TIMESTAMP returns the date and time.
B. Both functions are identical in output.
C. LOCALTIMESTAMP does not include fractional seconds, while CURRENT_TIMESTAMP does.
D. LOCALTIMESTAMP omits time zone information, while CURRENT_TIMESTAMP includes it.

Answer: D

NEW QUESTION # 52
Which type of subquery returns exactly one value?

A. Multiple-row subquery
B. Correlated subquery
C. Inline view
D. Scalar subquery

Answer: D

NEW QUESTION # 53
Which of the following can be achieved using a correlated subquery?

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

Answer: D

NEW QUESTION # 54
What does the EXISTS operator check in a subquery?

A. If the subquery contains only unique values
B. If the subquery references the outer query
C. If the subquery returns a specific number of rows
D. If the subquery returns any rows

Answer: D

NEW QUESTION # 55
......

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