UML Diagrams Notes Questions with Answers PDF Download - 63

The dynamic aspects related to a system are shown with the help of

1. sequence diagrams
2. interaction diagrams
3. deployment diagrams
4. use case diagrams

The extensions of relation that satisfy the constraint of functional dependency are considered as

1. legal extensions
2. semantic extensions
3. state extension
4. relation extensions

In relational calculus, the expression which does not guarantees finite number of tuples is classified as

1. unsafe expression
2. safe expression
3. declarative expression
4. stable expression

The command used in SQL which deletes the table definition as well as all the records available in the table is called

1. DELETE command
2. DROP TABLE command
3. PRIMARY KEY command
4. SECONDARY KEY command

The objects in database description is called

1. concept construct
2. entity construct
3. schema construct
4. attribution construct