Which of the following constraints can be used to enforce the uniqueness of rows in a table?

Database developer interview questions

(Continued from previous question...)

7. Which of the following constraints can be used to enforce the uniqueness of rows in a table?

7. Which of the following constraints can be used to enforce the uniqueness of rows in a table?
1. DEFAULT and NOT NULL constraints
2. FOREIGN KEY constraints
3. PRIMARY KEY and UNIQUE constraints
4. IDENTITY columns
5. CHECK constraints

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Other Interview Questions

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• When designing a database table, how do you avoid missing column values for non-primary key columns?
• Which of the following is the syntax for creating an Index?
• Which of the following constraints can be used to enforce the uniqueness of rows in a table?
• Which one of the following must be specified in every DELETE statement?
• Is this statement true or false: A cursor is a pointer that identifies a specific working row within a set
• Which of the following commands is used to change the structure of table?