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Business Logic Layer
In computer software, business logic or domain logic is the part of the program that encodes the real-world business rules that determine how data can be created, stored, and changed. It is contrasted with the remainder of the software that might be concerned with lower-level details of managing a database or displaying the user interface, system infrastructure, or generally connecting various parts of the program. Details and example Business logic: * Prescribes how business objects interact with one another * Enforces the routes and the methods by which business objects are accessed and updated Business rules: * Model real-life business objects (such as accounts, loans, itineraries, and inventories) Business logic comprises: * Workflows that are the ordered tasks of passing documents or data from one participant (a person or a software system) to another. Business logic should be distinguished from business rules. Business logic is the portion of an enterprise system which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software
Software is a set of computer programs and associated documentation and data. This is in contrast to hardware, from which the system is built and which actually performs the work. At the lowest programming level, executable code consists of machine language instructions supported by an individual processor—typically a central processing unit (CPU) or a graphics processing unit (GPU). Machine language consists of groups of binary values signifying processor instructions that change the state of the computer from its preceding state. For example, an instruction may change the value stored in a particular storage location in the computer—an effect that is not directly observable to the user. An instruction may also invoke one of many input or output operations, for example displaying some text on a computer screen; causing state changes which should be visible to the user. The processor executes the instructions in the order they are provided, unless it is instruc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Application Layer
An application layer is an abstraction layer that specifies the shared communications protocols and interface methods used by hosts in a communications network. An ''application layer'' abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model. Although both models use the same term for their respective highest-level layer, the detailed definitions and purposes are different. Internet protocol suite In the Internet protocol suite, the application layer contains the communications protocols and interface methods used in process-to-process communications across an Internet Protocol (IP) computer network. The application layer only standardizes communication and depends upon the underlying transport layer protocols to establish host-to-host data transfer channels and manage the data exchange in a client–server or peer-to-peer networking model. Though the TCP/IP application layer does not describe specific rules or data formats that applications mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erasmus University
Erasmus University Rotterdam (abbreviated as ''EUR'', nl, Erasmus Universiteit Rotterdam ) is a public research university located in Rotterdam, Netherlands. The university is named after Desiderius Erasmus Roterodamus, a 15th-century humanist and theologian. Erasmus MC is the largest and one of the foremost academic medical centers and trauma centers in the Netherlands, whereas its economics and business school, Erasmus School of Economics and Rotterdam School of Management are well known in Europe and beyond. Currently, Erasmus University Rotterdam has been placed in the top 100 universities in the world by four prominent international ranking tables. In 2017, the university was ranked by Times Higher Education as 69th in the world with its business & economics as 17th, and clinical health as 42nd in the world, and was ranked among top ten business schools in Europe by the ''Financial Times''. In 2015, Erasmus University Rotterdam was ranked by Times Higher Education as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JavaServer Pages
Jakarta Server Pages (JSP; formerly JavaServer Pages) is a collection of technologies that helps software developers create dynamically generated web pages based on HTML, XML, SOAP, or other document types. Released in 1999 by Sun Microsystems, JSP is similar to PHP and ASP, but uses the Java programming language. To deploy and run Jakarta Server Pages, a compatible web server with a servlet container, such as Apache Tomcat or Jetty, is required. Overview Architecturally, JSP may be viewed as a high-level abstraction of Java servlets. JSPs are translated into servlets at runtime, therefore JSP is a Servlet; each JSP servlet is cached and re-used until the original JSP is modified. Jakarta Server Pages can be used independently or as the view component of a server-side model–view–controller design, normally with JavaBeans as the model and Java servlets (or a framework such as Apache Struts) as the controller. This is a type of Model 2 architecture. JSP allows Java code ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Servlet
A Jakarta Servlet (formerly Java Servlet) is a Java software component that extends the capabilities of a server. Although servlets can respond to many types of requests, they most commonly implement web containers for hosting web applications on web servers and thus qualify as a server-side servlet web API. Such web servlets are the Java counterpart to other dynamic web content technologies such as PHP and ASP.NET. Introduction A Jakarta Servlet processes or stores a Java class in Jakarta EE that conforms to the Jakarta Servlet API, a standard for implementing Java classes that respond to requests. Servlets could in principle communicate over any client–server protocol, but they are most often used with HTTP. Thus "servlet" is often used as shorthand for "HTTP servlet". Thus, a software developer may use a servlet to add dynamic content to a web server using the Java platform. The generated content is commonly HTML, but may be other data such as XML and more comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Façade Pattern
The facade pattern (also spelled ''façade'') is a software-design pattern commonly used in object-oriented programming. Analogous to a facade in architecture, a facade is an object that serves as a front-facing interface masking more complex underlying or structural code. A facade can: * improve the readability and usability of a software library by masking interaction with more complex components behind a single (and often simplified) API * provide a context-specific interface to more generic functionality (complete with context-specific input validation) *serve as a launching point for a broader refactor of monolithic or tightly-coupled systems in favor of more loosely-coupled code Developers often use the facade design pattern when a system is very complex or difficult to understand because the system has many interdependent classes or because its source code is unavailable. This pattern hides the complexities of the larger system and provides a simpler interface to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Business Process Modeling
Business process modeling (BPM) in business process management and systems engineering is the activity of representing processes of an enterprise, so that the current business processes may be analyzed, improved, and automated. BPM is typically performed by business analysts, who provide expertise in the modeling discipline; by subject matter experts, who have specialized knowledge of the processes being modeled; or more commonly by a team comprising both. Alternatively, the process model can be derived directly from events' logs using process mining tools. The business objective is often to increase process speed or reduce cycle time; to increase quality; or to reduce costs, such as labor, materials, scrap, or capital costs. In practice, a management decision to invest in business process modeling is often motivated by the need to document requirements for an information technology project. Change management programs are typically involved to put any improved business proc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Relocating Logic
In computer programming, a self-relocating program is a program that relocates its own address-dependent instructions and data when run, and is therefore capable of being loaded into memory at any address. In many cases, self-relocating code is also a form of self-modifying code. Overview Self-relocation is similar to the relocation process employed by the linker-loader when a program is copied from external storage into main memory; the difference is that it is the loaded program itself rather than the loader in the operating system or shell that performs the relocation. One form of self-relocation occurs when a program copies the code of its instructions from one sequence of locations to another sequence of locations within the main memory of a single computer, and then transfers processor control from the instructions found at the source locations of memory to the instructions found at the destination locations of memory. As such, the data operated upon by the algorithm of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drakon-chart
DRAKON is a free and open source algorithmic visual programming and modeling language developed within the Buran space project following ergonomic design principles. The language provides a uniform way to represent flowcharts of any complexity that are easy to read and understand. The DRAKON Editor, which was released in September 2011, is an implementation of the language available in the public domain. It can be used for creating documentation, or for creating visual programs that can be converted to source code in other languages. Unlike UML's philosophy, DRAKON's language philosophy is based on being augmented if needed, by using a hybrid language, which can be illustrated as "incrustating code snippets from text language used into shape DRAKON requires". This way, DRAKON always remains a simple visual language that can be used as an augmentation for a programmer who is interested in making their own project code easier to support or other long-term needs for examp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domain Model
In software engineering, a domain model is a conceptual model of the domain that incorporates both behavior and data.Fowler, Martin. ''Patterns of Enterprise Application Architecture''. Addison Wesley, 2003, p. 116. In ontology engineering, a domain model is a formal representation of a knowledge domain with concepts, roles, datatypes, individuals, and rules, typically grounded in a description logic. Overview A domain model is a system of abstractions that describes selected aspects of a sphere of knowledge, influence or activity (a domainEvans, Eric ''Domain-Driven Design: Definitions and Pattern Summaries''. Domain Language Inc., 2006, p. 3.). The model can then be used to solve problems related to that domain. The domain model is a representation of meaningful real-world concepts pertinent to the domain that need to be modeled in software. The concepts include the data involved in the business and rules the business uses in relation to that data. A domain model levera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magic Pushbutton
The magic pushbutton is a common anti-pattern in graphical user interfaces. At its core, the anti-pattern consists of a system partitioned into two parts: user interface and business logic, that are coupled through a ''single'' point, clicking the "magic pushbutton" or submitting a form of data. As it is a single point interface, this interface becomes over-complicated to implement. The temporal coupling of these units is a major problem: every interaction in the user interface must happen ''before'' the pushbutton is pressed, business logic can only be applied ''after'' the button was pressed. Cohesion of each unit also tends to be poor: features are bundled together whether they warrant this or not, simply because there is no other structured place in which to put them. Drawbacks For users To a user, a magic pushbutton system appears clumsy and frustrating to use. Business logic is unavailable before the button press, so the user interface appears as a bland form-filling e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
User Interface Management Systems
A User Interface Management System (UIMS) is a mechanism for cleanly separating process or business logic from Graphical user interface (GUI) code in a computer program. UIMS are designed to support N-tier architectures by strictly defining and enforcing the boundary between the business logic and the GUI. A fairly rigid Software architecture is nearly always implied by the UIMS, and most often only one paradigm of separation is supported in a single UIMS. A UIMS may also have libraries and systems such as graphical tools for the creation of user interface resources or data stores. Generally, you cannot easily use multiple UIMS systems at the same time, so choosing the correct model for your UIMS is a critical design decision in any project. The choice of system is dependent upon the system(s) you wish to create user interfaces for, and the general style of your application. For example, if you want to create a web based front end, or just a standalone application or both that w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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