1. What is Relation ? Junior A. the candidate key chosen to uniquely identify rows, which cannot be null B. a minimal super key with no redundant attribute that still identifies tuples uniquely C. a table of rows and columns representing a set of related data in the relational model D. the number of tuples (rows) in a relation
2. Which term means: "a table of rows and columns representing a set of related data in the relational model"? Junior A. Composite key B. Foreign key C. Referential integrity D. Relation
3. Which statement is correct? Junior A. Relation — the set of permitted atomic values that an attribute may take B. Relation — the rule that a primary key attribute may never contain a null value C. Relation — the rule that a foreign key must match an existing primary key value or be null D. Relation — a table of rows and columns representing a set of related data in the relational model
4. What is Tuple ? Junior A. the number of tuples (rows) in a relation B. any set of attributes that uniquely identifies each tuple in a relation C. a single row of a relation representing one record D. the set of permitted atomic values that an attribute may take
5. Which term means: "a single row of a relation representing one record"? Junior A. Tuple B. Cardinality C. Super key D. Alternate key
6. Which statement is correct? Junior A. Tuple — the number of tuples (rows) in a relation B. Tuple — the rule that a primary key attribute may never contain a null value C. Tuple — a single row of a relation representing one record D. Tuple — a key made of two or more attributes that together uniquely identify a tuple
7. What is Attribute ? Junior A. any set of attributes that uniquely identifies each tuple in a relation B. a minimal super key with no redundant attribute that still identifies tuples uniquely C. the candidate key chosen to uniquely identify rows, which cannot be null D. a named column of a relation describing one property of its entities
8. Which term means: "a named column of a relation describing one property of its entities"? Junior A. Attribute B. Foreign key C. Tuple D. Domain
9. Which statement is correct? Junior A. Attribute — the set of permitted atomic values that an attribute may take B. Attribute — a minimal super key with no redundant attribute that still identifies tuples uniquely C. Attribute — the number of tuples (rows) in a relation D. Attribute — a named column of a relation describing one property of its entities
10. What is Domain ? Junior A. the rule that a primary key attribute may never contain a null value B. the set of permitted atomic values that an attribute may take C. a key made of two or more attributes that together uniquely identify a tuple D. the candidate key chosen to uniquely identify rows, which cannot be null
11. Which term means: "the set of permitted atomic values that an attribute may take"? Junior A. Alternate key B. Attribute C. Domain D. Cardinality
12. Which statement is correct? Junior A. Domain — any set of attributes that uniquely identifies each tuple in a relation B. Domain — a key made of two or more attributes that together uniquely identify a tuple C. Domain — the rule that a foreign key must match an existing primary key value or be null D. Domain — the set of permitted atomic values that an attribute may take
13. What is Degree ? Junior A. a table of rows and columns representing a set of related data in the relational model B. the number of attributes (columns) in a relation C. the set of permitted atomic values that an attribute may take D. any set of attributes that uniquely identifies each tuple in a relation
14. Which term means: "the number of attributes (columns) in a relation"? Junior A. Entity integrity B. Attribute C. Tuple D. Degree
15. Which statement is correct? Junior A. Degree — a minimal super key with no redundant attribute that still identifies tuples uniquely B. Degree — the number of attributes (columns) in a relation C. Degree — a candidate key not chosen as the primary key D. Degree — a named column of a relation describing one property of its entities
16. What is Cardinality ? Junior A. a candidate key not chosen as the primary key B. the number of tuples (rows) in a relation C. the rule that a foreign key must match an existing primary key value or be null D. any set of attributes that uniquely identifies each tuple in a relation
17. Which term means: "the number of tuples (rows) in a relation"? Junior A. Cardinality B. Alternate key C. Referential integrity D. Entity integrity
18. Which statement is correct? Junior A. Cardinality — the set of permitted atomic values that an attribute may take B. Cardinality — the number of tuples (rows) in a relation C. Cardinality — a minimal super key with no redundant attribute that still identifies tuples uniquely D. Cardinality — the rule that a foreign key must match an existing primary key value or be null
19. What is Super key ? Mid A. a minimal super key with no redundant attribute that still identifies tuples uniquely B. the rule that a primary key attribute may never contain a null value C. any set of attributes that uniquely identifies each tuple in a relation D. a key made of two or more attributes that together uniquely identify a tuple
20. Which term means: "any set of attributes that uniquely identifies each tuple in a relation"? Mid A. Alternate key B. Referential integrity C. Composite key D. Super key
21. Which statement is correct? Mid A. Super key — the candidate key chosen to uniquely identify rows, which cannot be null B. Super key — the rule that a primary key attribute may never contain a null value C. Super key — the number of tuples (rows) in a relation D. Super key — any set of attributes that uniquely identifies each tuple in a relation
22. What is Candidate key ? Mid A. the number of attributes (columns) in a relation B. a minimal super key with no redundant attribute that still identifies tuples uniquely C. the rule that a primary key attribute may never contain a null value D. a single row of a relation representing one record
23. Which term means: "a minimal super key with no redundant attribute that still identifies tuples uniquely"? Mid A. Composite key B. Candidate key C. Alternate key D. Attribute
24. Which statement is correct? Mid A. Candidate key — the set of permitted atomic values that an attribute may take B. Candidate key — the number of tuples (rows) in a relation C. Candidate key — a candidate key not chosen as the primary key D. Candidate key — a minimal super key with no redundant attribute that still identifies tuples uniquely
25. What is Primary key ? Junior A. the candidate key chosen to uniquely identify rows, which cannot be null B. the rule that a primary key attribute may never contain a null value C. the number of tuples (rows) in a relation D. a key made of two or more attributes that together uniquely identify a tuple
26. Which term means: "the candidate key chosen to uniquely identify rows, which cannot be null"? Junior A. Entity integrity B. Primary key C. Attribute D. Super key
27. Which statement is correct? Junior A. Primary key — a minimal super key with no redundant attribute that still identifies tuples uniquely B. Primary key — the candidate key chosen to uniquely identify rows, which cannot be null C. Primary key — the set of permitted atomic values that an attribute may take D. Primary key — the number of tuples (rows) in a relation
28. What is Foreign key ? Mid A. an attribute referencing the primary key of another relation to enforce a link between tables B. the number of attributes (columns) in a relation C. a table of rows and columns representing a set of related data in the relational model D. a named column of a relation describing one property of its entities
29. Which term means: "an attribute referencing the primary key of another relation to enforce a link between tables"? Mid A. Degree B. Super key C. Foreign key D. Composite key
30. Which statement is correct? Mid A. Foreign key — the rule that a primary key attribute may never contain a null value B. Foreign key — the candidate key chosen to uniquely identify rows, which cannot be null C. Foreign key — a minimal super key with no redundant attribute that still identifies tuples uniquely D. Foreign key — an attribute referencing the primary key of another relation to enforce a link between tables Showing 30 of 42 DBMS · Relational Model questions — the full set, with answers, explanations and an AI tutor on every question, is inside.