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Oracle Database 23ai SQL Associate Sample Questions:

1. Which INTERVAL data type would you use to store a period of time in years and months?

A) INTERVAL DAY TO SECOND
B) INTERVAL MINUTE TO HOUR
C) INTERVAL MONTH TO DAY
D) INTERVAL YEAR TO MONTH

2. Which SQL function calculates the number of months between two dates?
Response:

A) MONTHS_BETWEEN
B) DATE_DIFF
C) TIME_DIFF
D) DATE_CALC

3. Which of the following statements is true about constraints in Oracle Database?

A) Constraints are automatically dropped when rows are deleted.
B) Constraints can be added or modified using the ALTER TABLE statement.
C) Constraints cannot reference other tables.
D) Constraints can only be added when creating a table.

4. What does the INTERSECT operator do in SQL?

A) Combines all rows from two queries without any conditions
B) Returns rows from the first query that are not present in the second query
C) Combines rows from two queries and includes all duplicates
D) Returns rows that are present in both queries

5. Which of the following best describes a relational database?

A) A database where all data is stored as key-value pairs
B) A database that organizes data hierarchically
C) A flat file system with no defined relationships between data
D) A database that uses a tabular structure with rows and columns to represent relationships between data entities

Solutions: