Introduction to DBMS Quiz Questions and Answers PDF - 221

MCQ 1101: The key that means no two cell CELLAR rows ever contain the same values, is known as

1. Secondary key
2. Unique key
3. Primary key
4. Node key

MCQ 1102: The E-R diagram permits attributes of entity sets and relationship sets that are having some degree of

1. Subdomain
2. Sublevels
3. Substructure
4. Subclasses

MCQ 1103: Each table in a relational model has multiple columns having

1. Unique names
2. Reflective names
3. Grouped names
4. Similar names

MCQ 1104: The association between entity sets is referred to as

1. Connection
2. Participation
3. Assemble
4. Simulation

MCQ 1105: As a result of null values being ignored, the collection of values may

1. Exist
2. Not exist
3. Empty
4. Fluctuate