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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. Which type of join returns all rows from the left table, even if there are no matches in the right table?

A) INNER JOIN
B) FULL OUTER JOIN
C) LEFT OUTER JOIN
D) RIGHT OUTER JOIN

2. How does SQL handle NULL values in arithmetic expressions?

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

3. What is required for the queries combined by a SET operator to work correctly?

A) Both queries must include the WHERE clause.
B) The result sets must have the same number of columns and compatible data types.
C) The tables must be joined using a primary key.
D) Both queries must use the GROUP BY clause.

4. Which data dictionary view provides information about all tables accessible to the current user?

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

5. Which clause in a SQL SELECT statement is used to define the columns to be retrieved?

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

Solutions: