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Constraints in DBMS Questions and Answers PDF Download eBook
MCQ: When an entity in set A is associated with any number of entities in set B, the cardinality is of type
- All-to-all
- One-to-many
- One-to-one
- Many-to-many
B
MCQ: Assertion have special form known to be
- Domain constraints
- Referential integrity constraints
- Both A and B
- Isolation constraint
C
MCQ: A single transaction failure may result into a set of transaction rollbacks, is known to be
- Iterated rollback
- Cascadeless rollback
- Cascading rollback
- Serial rollback
C
MCQ: A model that uses a collection of basic objects, and relationships among these objects, is known as
- Relational model
- Entity relationship model
- Object-based Data model
- Semi-structured data model
B
MCQ: An unordered set of attribute values is named as
- Tuples
- Entities
- Nodes
- Instances
A