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Constraints in DBMS MCQ (Multiple Choice Questions) PDF Download
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The MCQ: The mapping cardinalities can be of type; "Constraints in DBMS" App Download (Free) with answers: 2 types; 3 types; 4 types; 5 types; to learn computer science courses. Practice Constraints in DBMS Quiz Questions, download Apple e-Book (Free Sample) for bachelor's degree in computer science.
Constraints in DBMS MCQ (PDF) Questions Answers Download
Mapping cardinalities are useful in describing
- Unary relationships
- Binary relationships
- Composite relationships
- Simple relationships
The mapping cardinalities can be of type
- 2 types
- 3 types
- 4 types
- 5 types
The appropriate mapping cardinality for a particular relationship set depends on
- Model
- Schema
- Situation
- Domain
The structure of the primary key for the relationship set depends on the
- Entity sets
- Roles
- Mapping cardinalities
- Mapping expression
An entity set E in a relationship set R is said to be total if every entity in E participates in
- At least one relationship in R
- All relationships in R
- None relationship in R
- Few relationship in R
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