2/1/2022

# Sequence Diagram Geeksforgeeks

• The sequence diagram has four objects (Customer, Order, SpecialOrder and NormalOrder). The following diagram shows the message sequence for SpecialOrder object and the same can be used in case of NormalOrder object. It is important to understand the time sequence of message flows. The message flow is nothing but a method call of an object.
• Sequence of Sequence Easy Accuracy: 61.63% Submissions: 336 Points: 2 Given two integers m & n, find the number of possible sequences of length n such that each of the next element is greater than or equal to twice of the previous element but less than or equal to m.

UML sequency diagram is one of the structural type in diagrams of Unified Modeling Language.

Unified Modeling Language or UML is a general-purpose, developmental, modeling language in the field of software engineering that is intended to provide a standard way to visualize the design of a system. Unified Modeling Language has many types of diagrams, which are divided into two categories. Types represent structural information, and the general types of behavior, including a few that represent different aspects of interactions.

UML Sequence Diagram shows object interactions arranged in time sequence. It depicts the objects and classes involved in the scenario and the sequence of messages exchanged between the objects needed to carry out the functionality of the scenario. Sequence diagrams are typically associated with use case realizations in the Logical View of the system under development. Sequence diagrams of Unified Modeling Language (UML) are sometimes called event diagrams or event scenarios.

A sequence diagram is a type of interaction diagram because it describes how—and in what order—a group of objects works together. These diagrams are used by software developers and business professionals to understand requirements for a new system or to document an existing process. The Sequence diagram lists objects horizontally, and time vertically, and models these messages over time. Izontally, Notation In a Sequence diagram, classes and actors are listed as columns, with vertical lifelines indicating the lifetime of the object over time. Object Objects are instances of classes, and are classes, arranged horizontally. Sequence diagram captures the interaction between the objects in the context of collaboration. Sequence diagrams are time focused and they show the order. READ MORE on www.geeksforgeeks.org.

### Sequence Diagram Geeksforgeeks Example

Sequence Diagram in UML shows, as parallel vertical lines (lifelines), different processes or objects that live simultaneously, and, as horizontal arrows, the messages exchanged between them, in the order in which they occur. This allows the specification of simple runtime scenarios in a graphical manner.