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Oracle 1Z1-171 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Manipulation Language (DML)	- Insert, Update, Delete operations 1. Transaction control (COMMIT, ROLLBACK) 2. Data integrity considerations
Topic 2: Data Definition Language (DDL)	- Schema objects 1. Tables and constraints 2. Views and indexes
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. Entity relationships and normalization basics 2. Tables, rows, columns, and keys
Topic 5: 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

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Oracle Database 23ai SQL Associate Sample Questions (Q93-Q98):

NEW QUESTION # 93
Which clause is used to ensure that only specific rows are deleted in a DELETE statement?

A. SET
B. WHERE
C. FROM
D. HAVING

Answer: B

NEW QUESTION # 94
What happens when a temporary table is created in Oracle Database?

A. It cannot have any constraints.
B. It is permanently stored in the database.
C. It is created for the duration of a user session or transaction.
D. It is stored in external files.

Answer: C

NEW QUESTION # 95
What is the difference between UNION and UNION ALL?

A. UNION works with subqueries, while UNION ALL does not.
B. UNION removes duplicates, while UNION ALL includes all rows, including duplicates.
C. UNION combines columns, while UNION ALL combines rows.
D. UNION includes all rows, while UNION ALL removes duplicates.

Answer: B

NEW QUESTION # 96
What is the purpose of using external tables in Oracle Database?

A. To manage data stored in external files using SQL
B. To improve the performance of complex queries
C. To store backup copies of database tables
D. To create temporary tables for session-specific data

Answer: A

NEW QUESTION # 97
How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?

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

Answer: C

NEW QUESTION # 98
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