CompTIA
FC0-U61 · Question #14
Which of the following relational database constructs is used to ensure valid values are entered for a column?
The correct answer is C. Constraint. Constraints are used to limit the data type such that, only the required data type is entered in a table, any other data action that violates , this is aborted. This helps to enhance reliability and accuracy of data entered in a table.
Database Fundamentals
Question
Which of the following relational database constructs is used to ensure valid values are entered for a column?
Options
- ASchema
- BPermissions
- CConstraint
- DColumn
How the community answered
(37 responses)- A3% (1)
- B3% (1)
- C86% (32)
- D8% (3)
Explanation
Constraints are used to limit the data type such that, only the required data type is entered in a table, any other data action that violates , this is aborted. This helps to enhance reliability and accuracy of data entered in a table.
Topics
#database constraints#data integrity#relational databases
Community Discussion
No community discussion yet for this question.