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The MCQ: The key which specifies that two different tuples cannot have the same value is classified as; "Database Constraints and Relational Schemas" App Download (Free) with answers: Super key; Simple key; Parallel key; Conceptual key; to learn online educational courses. Practice Database Constraints and Relational Schemas Quiz Questions, download Apple eBook (Free Sample) for online computer science and engineering.
Database Constraints and Relational Schemas MCQs: Questions and Answers PDF Download
When the primary key is null of the new tuple then the constraint violated is
- null integrity constraint
- primary integrity constraint
- secondary integrity constraint
- entity integrity constraint
The key which specifies that two different tuples cannot have the same value is classified as
- super key
- simple key
- parallel key
- conceptual key
The constraint violated when the given value of attribute is not included in the corresponding domain is
- domain constraint
- attribute constraint
- key constraint
- lock constraint
If two or more constraints are violated by using insert operation then by default the
- insert is accepted
- insert is rejected
- insertion permanently blocked
- none of above
The multi-valued dependencies and functional dependencies are classified as category of
- relation dependencies
- data dependencies
- entity dependencies
- attribute dependencies
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Database Constraints & Relational Schemas MCQs Book Questions
- Data model in which relationships are explained in terms of attributes is classified as
- Kind of class whose entities belongs to some other data class is called
- Form of dependency in which set of attributes that are neither a subset of any of keys nor candidate key is classified as
- If global depth is more than local depth then operation must be performed in directory array is
- Possible specialization constraint includes