Database Systems Practice Test 221
Introduction to DBMS Quiz Questions and Answers PDF Download - 221
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The Quiz: The key that means no two cell CELLAR rows ever contain the same values, is known as; "Introduction to DBMS" App Download (Free) with answers: Unique key; Secondary key; Primary key; Node key; for computer science programs. Learn Overview of Database Management Questions and Answers, Apple eBook to download free sample for computer science bachelor degree online.
Introduction to DBMS Questions and Answers PDF Download: MCQ 221
The key that means no two cell CELLAR rows ever contain the same values, is known as
- Secondary key
- Unique key
- Primary key
- Node key
The E-R diagram permits attributes of entity sets and relationship sets that are having some degree of
- Subdomain
- Sublevels
- Substructure
- Subclasses
Each table in a relational model has multiple columns having
- Unique names
- Reflective names
- Grouped names
- Similar names
The association between entity sets is referred to as
- Connection
- Participation
- Assemble
- Simulation
As a result of null values being ignored, the collection of values may
- Exist
- Not exist
- Empty
- Fluctuate
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