3(a) In software design we can use different uml diagrams to describe different aspects or structures of the design. For each of the following uml diagrams which are used in design specification of a software system, using one sentence to describe, What aspect or structure of the system that the diagram describes:

1.USE CASE DIAGRAM 2.CLASS DIAGRAM 3.SEQUENCE DIAGRAM 4.STATE CHART DIAGRAM 5. COMPONENT DIAGRAM.

(B)Consider the following sentences taken from various information descriptions to software development problems.From an analysis , Identify the classes and relations among them.That can be infered from the sentences.Represent your answers using UML class diagram:

1.Students live in hostels

2.Every student is amember of library

3.A student can renew his borrwed books

4. A college has many students.

5.A linked list consists of many nodes such that each node is asuccesor of some node and is the predecessor of some node.