Information about Database Centric
Database-centric architecture or data-centric architecture has several distinct meanings, generally relating to software architectures in which databases play a crucial role. Often this description is meant to contrast the design to an alternative approach. For example, the characterization of an architecture as "database-centric" may mean any combination of the following:
- using a standard, general-purpose relational database management system, as opposed to customized in-memory or file-based data structures and access methods. With the evolution of sophisticated DBMS software, much of which is either free or included with the operating system, application developers have become increasingly reliant on standard database tools, especially for the sake of rapid application development.
- using dynamic, table-driven logic, as opposed to logic embodied in previously compiled programs. The use of table-driven logic, i.e. behavior that is heavily dictated by the contents of a database, allows programs to be simpler and more flexible. This capability is a central feature of dynamic programming languages.
- using stored procedures that run on database servers, as opposed to greater reliance on logic running in middle-tier application servers in a multi-tier architecture. The extent to which business logic should be placed at the back-end versus another tier is a subject of ongoing debate. For example, Oracle presents a detailed analysis of alternative architectures that vary in the placement of business logic, concluding that a database-centric approach has practical advantages from the standpoint of ease of development and maintainability.http://download.oracle.com/oowsf2004/1091_wp.pdf
- using a shared database as the basis for communicating between parallel processes in distributed computing applications, as opposed to direct inter-process communication via message passing functions and message-oriented middleware. A potential benefit of database-centric architecture in distributed applications is that it simplifies the design by utilizing DBMS-provided transaction processing and indexing to achieve a high degree of reliability, performance, and capacity.
References
Software development process
Activities and steps
Requirements | Architecture | Implementation | Testing | Deployment
Models
Agile | Cleanroom | Iterative | RAD | RUP | Spiral | Waterfall | XP
Supporting disciplines
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Activities and steps
Requirements | Architecture | Implementation | Testing | Deployment
Models
Agile | Cleanroom | Iterative | RAD | RUP | Spiral | Waterfall | XP
Supporting disciplines
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database is a structured collection of records or data that is stored in a computer system so that a computer program or person using a query language can consult it to answer queries. The records retrieved in answer to queries are information that can be used to make decisions.
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A relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as introduced by E. F. Codd. Relational databases are the most common kind of database in use today (assuming one does not count a file system as a database).
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data structure is a way of storing data in a computer so that it can be used efficiently. Often a carefully chosen data structure will allow the most efficient algorithm to be used. The choice of the data structure often begins from the choice of an abstract data type.
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An access method is a function of a mainframe operating system that enables access to data on disk, tape or other external devices. They were introduced in 1963 in IBM OS/360 operating system.
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An operating system (OS) is the software that manages the sharing of the resources of a computer. An operating system processes system data and user input, and responds by allocating and managing tasks and internal system resources as a service to users and programs of the
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Software development process
Activities and steps
Requirements | Architecture | Implementation | Testing | Deployment
Models
Agile | Cleanroom | Iterative | RAD | RUP | Spiral | Waterfall | XP
Supporting disciplines
..... Click the link for more information.
Activities and steps
Requirements | Architecture | Implementation | Testing | Deployment
Models
Agile | Cleanroom | Iterative | RAD | RUP | Spiral | Waterfall | XP
Supporting disciplines
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compiler is a computer program (or set of programs) that translates text written in a computer language (the source language) into another computer language (the target language).
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Dynamic programming language is a term used broadly in computer science to describe a class of high level programming languages that execute at runtime many common behaviors that other languages might perform during compilation, if at all.
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A stored procedure is a subroutine available to applications accessing a relational database system. Stored procedures (sometimes called a sproc or SP) are actually stored in the database.
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A database server is a computer program that provides database services to other computer programs or computers, as defined by the client-server model. The term may also refer to a computer dedicated to running such a program.
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An application server is a software engine that delivers applications to client computers or devices. Moreover, an application server handles most, if not all, of the business logic and data access of the application (a.k.a. centralization).
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In software engineering, multi-tier architecture (often referred to as n-tier architecture) is a client-server architecture, originally designed by Jonathon Bolster of Hematites Corp, in which an application is executed by more than one distinct software agent.
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Business logic is a non-technical term generally used to describe the functional algorithms which handle information exchange between a database and a user interface. There exists no definition of business logic in any programming language specification or API, nor in any academic
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Distributed computing is a method of computer processing in which different parts of a program run simultaneously on two or more computers that are communicating with each other over a network.
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Inter-Process Communication (IPC) is a set of techniques for the exchange of data among two or more threads in one or more processes. Processes may be running on one or more computers connected by a network.
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In computer science, message passing is a form of communication used in concurrent computing, parallel computing, object-oriented programming, and interprocess communication. Communication is made by the sending of messages to recipients.
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Message-oriented middleware comprises a category of inter-application communication software that generally relies on asynchronous message-passing as opposed to a request/response metaphor.
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distributed applications are two-tier (client-server), three-tier (client-middleware-server), and multitier (Source: [1]
See also distributed computing.
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See also distributed computing.
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transaction processing is information processing that is divided into individual, indivisible operations, called transactions. Each transaction must succeed or fail as a complete unit; it cannot remain in an intermediate state.
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