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Oracle Database 23ai SQL Associate Sample Questions:

1. Which command revokes a user's privilege to update a table?

A) DENY UPDATE ON table_name FROM user_name;
B) REVOKE UPDATE ON table_name FROM user_name;
C) DELETE UPDATE ON table_name FROM user_name;
D) REMOVE UPDATE ON table_name FROM user_name;

2. What is the relationship between SQL and a relational database?

A) SQL is a scripting language used for file manipulation.
B) SQL is a file system used to store relational database data.
C) SQL is used to create flat file databases.
D) SQL is a standard query language used to interact with relational databases

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

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

4. What is the difference between UNION and UNION ALL?

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

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

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

Solutions: