1Z0-171 Online Training & Accurate 1Z0-171 Answers

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Oracle 1Z0-171 Exam Syllabus Topics:

Section	Objectives
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. UNION, INTERSECT, MINUS 2. Single-row and group functions
Retrieving Data Using SQL	- SELECT statements 1. Column selection and expressions 2. Filtering with WHERE clause 3. Sorting results with ORDER BY - Joins and Subqueries 1. Correlated and non-correlated subqueries 2. Inner and outer joins
Data Definition Language (DDL)	- Schema objects 1. Tables and constraints 2. Views and indexes
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 (Q50-Q55):

NEW QUESTION # 50
What is the output of the following query?
SELECT CURRENT_DATE FROM dual;

A. The current date in the database time zone
B. The current date in the session time zone
C. The current date and time in UTC
D. The current date and time in the database time zone

Answer: B

NEW QUESTION # 51
Which of the following is true about foreign key constraints in SQL?

A. They define a relationship between two tables.
B. They enforce the uniqueness of values in a column.
C. They ensure that a column only contains NULL values.

Answer: A

NEW QUESTION # 52
What is a SELF JOIN in SQL?

A. A join of a table with itself
B. A join that does not require a WHERE clause
C. A join used for Cartesian products
D. A join between tables with identical structures

Answer: A

NEW QUESTION # 53
Which type of subquery returns exactly one value?

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

Answer: C

NEW QUESTION # 54
How does SQL handle NULL values in arithmetic expressions?

A. Treats them as the largest possible number
B. Produces an error
C. Produces a NULL result
D. Treats them as zero

Answer: C

NEW QUESTION # 55
......

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