Q. Which of the following is NOT a E-R model of all versions of the E-R model?

View solution

Q. In which of the following is a single-entity instance of one type of related to a single-entity instance of another type?

View solution

Q. Entities can be associated with one another in which of the following?

View solution

Q. Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?

View solution

Q. Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity?

View solution

Q. In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.

View solution

Q. The database schema is written in

View solution

Q. An entity set that does not have sufficient attributes to form a primary key is a

View solution

Q. In an E-R diagram attributes are represented by

View solution

Q. In case of entity integrity, the primary key may be

View solution

Q. In an E-R diagram an entity set is represent by a

View solution

Q. E-R model uses this symbol to represent weak entity set ?

View solution

Q. Which of the following are the properties of entities?

View solution

Q. What is a relationship called when it is maintained between two entities?

View solution

Q. A set of possible data values is called

View solution

Q. Which of the following is another name for weak entity?

View solution

Q. In E-R Diagram derived attribute are represented by

View solution

Q. An instance of relational schema R (A, B, C) has distinct values of A including NULL values. Which one of the following is true?

View solution

Q. In E-R Diagram relationship type is represented by

View solution

Q. In E-R diagram generalization is represented by

View solution