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

Q. Database supports _______ types of database schema's.

View solution

Q. Which of the following are valid types of Database Schema's ?

View solution

Q. Which of the following schema is present at highest level ?

View solution

Q. Map of concepts and their relationships is represented by __________ Schema.

View solution