Service Oriented Architecture:5 describes key concepts in service oriented analysis and design including: 1. A service is a discrete unit of functionality that is autonomous, standardized, and encapsulates logic like a task in a process or sub-process. 2. Services communicate by sending messages and relate to each other through service awareness, descriptions, and communication. 3. Services are designed by determining the processing logic and creating service-oriented solutions and stacks that represent business processes as long-running sets of service invocations that encompass multiple operations representing transactions of work.

1. Service Oriented Architecture:5
Service Oriented Analysis and Design
Prof Neeraj Bhargava
Vaibhav Khanna
Department of Computer Science
School of Engineering and Systems Sciences
Maharshi Dayanand Saraswati University Ajmer

2. Service and Service Orientation
What is a service?
• Discrete unit of functionality
• Autonomous
• Standardization
• Black box
What is service orientation?
• Logic decomposed into smaller pieces
• Specific
• Software to solve individual concerns

3. How a service encapsulates logic
• Relationship between service and logic:
• 1.Service–task in a process
• 2.Service–sub-process
• 3.Service-process

4. How services relate?
• Service awareness
• Service description
• Service communication

5. How services communicate
• Send messages ….. Autonomous …. Self governing
logic
Components of SOA
• Services….. Service description
• Messages

6. How are services designed
• What is processing logic?
• What is service oriented processing logic?
• What is service oriented solution

7. SOA Solution Stack

8. Operations
• Operations: Transactions that represent single logical
units of work (LUWs).
• Execution of an operation will typically cause one or
more persistent data records to be read, written, or
modified.
• SOA operations are directly comparable to object-
oriented (OO) methods.
• They have a specific, structured interface, and return
structured responses.
• Just as for methods, the execution of a specific
operation might involve invocation of additional
operations.

9. Services
• Services: Represent logical groupings of
operations.
• For example, if we view Customer Profiling as
a service, then, Lookup customer by telephone
number, List customers by name and postal
code, and Save data for new customer
represent the associated operations

10. Business Processes
• Business Processes: A long running set of actions or
activities performed with specific business goals in
mind.
• Business processes typically encompass multiple
service invocations.
• Examples of business processes are: Initiate New
Employee, Sell Products or Services, and Fulfill Order.
• In SOA terms, a business process consists of a series of
operations which are executed in an ordered sequence
according to a set of business rules

11. Assignment
• Assignment 1: Discuss in detail the concept of
Service Oriented Analysis and Design.
• Thank You