Unified Modeling Language (UML)

UML (Unified Modeling Language)

● UML is a language for the standard model development of software blueprints. 

● Language is the language models have a dictionary of words and rules-based the conceptual and physical picture of a system 

● UML as the language of the model states how to make and read a model correctly, but does not state the model what to make and when should made

Role of UML 

UML is a language for 

● Visualization 

- Describing the ideas in notation and semantics more easily understood by anyone 

● Specifications 

- Specification of all important decisions analysis, design, and implementation should be taken in the development and deployment of software systems

● Construction 

- UML is not a visual programming language 

- UML models can be connected directly with several programming languages 

- Forward engineering: generating code from models 

- Reverse engineering: building a model of the code 

● Documentation 

- UML includes documentation and system architecture detailed 

- For a language to express needs and testing. 

- UML provides a language for planning activities project and release management

Structural Things

● Structural thing is a noun models UML 

- Class 

● An overview of a set of objects that share attributes, operations, relationships and semantics are the same 

● A class implementing one or more interfaces 

- Interface 

● A set of operations stating the services of a class or component 

● An interface describes the behavior of objects provided to outside parties. 

● Interface can only declare some or all the behavior of a class / component.

● Collaboration 

- An interaction and a set of rules and elements others who work together to provide behavioral working together 

- Declare the application of pattern forming systems 

● Use Case 

- An overview of a set of action sequences occurs in a system that produces a value the actor 

- Used to menstrkturkan system behavior in a model 

- It is the realization of collaboration.

● Active Class 

- A class to which the object has one or more process / thread activity so that it can start controls 

● Component 

- A physical and replaceable part of a system provides the realization of a set of interfaces 

- Declare the physical package than logic elements, such as classes, interfaces and collaboration 

● Node 

- Physical elements that exist at run time and expresses a sesumber calculations, which memory and processing capabilities

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The Role of Information Systems and Information Technology

The role of information systems and information technology for the future of the organization:

1. Support the business processes and operations and organization. 

2. To support the decision making of employees and managers.

3. Support a variety of strategies for organizational competitive advantage.

The role of information systems in organizations:

1. Support the major functional areas of the organization important in the success of a business, such as accounting, finance, operations management, marketing and human resource management (HRM). 

2. Top important in operational efficiency, productivity and employee morale and customer service and satisfaction.

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STRUCTURING SYSTEM REQUIREMENTS

LOGIC MODEL MAKING
Previously, we have studied how the change process  data into information is a vital part of the system information. The best possible data flow diagram or DFD identify processes, DFD is not good enough to show logic contained in a process. In fact, at the level DFD primitive does not show the processing steps fundamental. What happens in the process? how the data input is converted into output information? Since the DFD is designed not to show the detailed processing logic, you must create a logic model of the process using other techniques. this discussion talk about the techniques you use to make logic model process. First, you will be

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Computer Crime

COMPUTER VIRUS
Computer virus is a computer program that can duplicate or copy itself and spreads by inserting copies of itself into other programs or documents. Computer viruses can be analogous to a biological virus, which spreads by inserting itself into selmakhlukhidup.
Computer viruses can damage (eg by corrupting the data on the document), make computer users feel disturbed, or no effect at all.

SPAM

Spam or junk mail can also be shaped is the abuse of electronic messaging systems to send news ads and other purposes in bulk.

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System Development

The system needs to be repaired or replaced due to:
1. The problems that arise in the old system (irregularities and organizational growth)
2. To seize the opportunity
3. The existence of instruction

Expected increase in system

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Definition and Explanation of Data Structures, Stack, Queue, Sorting (Bubble Sort and Selection Sort)

1. DATA STRUCTURES  
Data structures are ways to save or represent data in the computer to be used efficiently. While the data is a representation of the real world facts. Facts or information about a reality that is stored, recorded or represented in the form of text, sound, images, signals or symbols.

Broadly speaking, the types of data can be categorized into:
Simple data type. Single simple data types,

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Management word comes from Old French Menagement, which means the art to implement and manage. According to Mary Parker Follett, management as art work done through others. This definition means that a manager responsible for managing and directing others to achieve organizational goals. According to Ricky W. Griffin: a process of planning, organizing, coordinating, and controlling resources to achieve the objectives (goals) effectively and efficiently. Effective means that the goal can be achieved in accordance with the planning, while efficiently means that the task at hand done correctly, organized,

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Client-Server

Client-Server is a division of labor between the server and the clients who access the server in a network. So the client-server architecture is the design of an application consists of client and server communicate with each other when accessing servers in a network.

Client server system is defined as a distributed system,

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The Functions of Computer Servers

After I provide an understanding of an existing operating system on the server computer. Now it’s time to switch to a function or usefulness of the server itself. There are several functions that can be found on this server, among others, are as follows.

Application server
This server has the function to store a wide variety of applications that will be accessed by the client computer. For example, the central

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Components of Server

Components of the server computer consist of a wide variety of hardware together with regular components in the client computer. Nevertheless, the components on the server as well as a class have a much higher quality because it will function with many compositions. The following explanation will tell you what these components are.

Motherboard
The motherboard is a circuit board inside a computer with all the components in your computer be connected. This is the core of a computer that is referred to as ‘ mother ‘.
The main components on the

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