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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What is the primary purpose of a primary key in a relational database?

A) To sort data in ascending order
B) To store duplicate data in a table
C) To uniquely identify each record in a table
D) To establish relationships between tables

2. Which command is used to add a new column to an existing table?

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

3. Which of the following statements creates an ascending sequence starting at 100 and incrementing by 10?

A) CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY 10;
B) CREATE SEQUENCE seq_1 START WITH 100 INCREMENT BY -10;
C) CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY 100;
D) CREATE SEQUENCE seq_1 START WITH 10 INCREMENT BY -100;

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

A) ALL_TAB_COLUMNS
B) DBA_TAB_COLUMNS
C) ALL of the above
D) USER_COLUMNS

5. What happens when a unique index is created on a table column?

A) The column values are automatically encrypted.
B) The column data type is converted to a primary key.
C) The column cannot contain duplicate values.
D) The column can only contain NULL values.

Solutions: