What is Data Modeling? Data modeling is the act of exploring data-oriented structures. Like other modeling artifacts data models can be used for a variety of purposes, from high-level conceptual models to physical data models. From the point of view of an object-oriented developer data modeling is conceptually similar to class modeling.
Towards Agile Architecture Architecture provides the foundation from which systems are built and an architectural model defines the vision on which your architecture is based.
The scope of architecture can be that of a single application, of a family of applications, for an organization, or for an infrastructure such as the Internet that is shared by many organizations. Regardless of the scope, my experience is that you can take an agile approach to the modeling, development, and evolution of an architecture.
Here are a few ideas to get you thinking: There is nothing special about architecture.
Agile Modeling's value of humility states that everyone has equal value on a project, therefore anyone in the role of architect and their efforts are just as important but no more so than the efforts of everyone else. Yes, good architects Data warehouse architecture essay a specialized skillset appropriate to the task at hand and should have the experience to apply those skills effectively.
The exact same thing can be said, however, of good developers, of good coaches, of good senior managers, and so on.
Humility is an important success factor for your architecture efforts because it is what you need to avoid the development of an ivory tower architecture and to avoid the animosity of your teammates. The role of architect is valid for most projects, it just shouldn't be a role that is fulfilled by someone atop a pedestal.
You should beware ivory tower architectures.
|Choose the Right Software Method for the Job||The three tier architecture is used to analyze and extract data from databases.|
|Research paper vs thesis sentence||Sample Essay This essay is on architecture of data warehouse. Though simplistic when they arrived in the market, Data warehouse have constantly evolved now into more complex architecture.|
|Data Warehousing Essays||You may need several methods 1. The Need for Flexibility To succeed at software development you need to be flexible in your choice of software development method, to choose the right one for the job.|
|Do websites get italicized in an essay||Basic Figure shows a simple architecture for a data warehouse. End users directly access data derived from several source systems through the data warehouse.|
|Essay: Architecture Data Warehouse||Sears is in the retailing business selling ever thing from under garments to washing machines. The main reason why the company is implementing the DW is because it wants to maximize the use of its information in its credit data warehouse.|
An ivory tower architecture is one that is often developed by an architect or architectural team in relative isolation to the day-to-day development activities of your project team s. The mighty architectural guru s go off and develop one or more models describing the architecture that the minions on your team is to build to for the architect s know best.
Ivory tower architectures are often beautiful things, usually well-documented with lots of fancy diagrams and wonderful vision statements proclaiming them to be your salvation. In theory, which is typically what your architect s bases their work on, ivory tower architectures work perfectly.
However, experience shows that ivory tower architectures suffer from significant problems. First, the "minion developers" are unlikely to accept the architecture because they had no say in its development. Second, ivory tower architectures are often unproven, ivory tower architects rarely dirty their hands writing code, and as a result are a significant risk to your project until you know they actually work through the concrete feedback provided by a technical prototype.
Third, ivory tower architectures will be incomplete if the architects did nothing else other than model because you can never think through everything your system needs. Fourth, ivory tower architectures promote overbuilding of software because they typically reflect every feature ever required by any system that your architect s were ever involved with and not just the features that your system actually needs.
Every system has an architecture. BUT, it may not necessarily have architectural models describing that architecture. For example, a small team taking the XP approach that is working together in the same room may not find any need to model their system architecture because everyone on the team knows it well enough that having a model doesn't provide sufficient value to them.
Or, if an architectural model exists it will often be a few simple plain old whiteboard POW sketches potentially backed by a defined project metaphor.
This works because the communication aspects of XP, including pair programming and Collective Ownershipnegate the need for architecture model s that need to be developed and maintained throughout the project. Other teams - teams not following XP, larger teams, teams where people are not co-located - will find that the greater communication challenges inherent in their environment requires them to go beyond word-of-mouth architecture.
These teams will choose to create architectural models to provide guidance to developers as to how they should build their software. Fundamentally, the reason why you perform architectural modeling is to address the risk of members of your development team not working to a common vision.
This is true of traditional techniques as well. Have a viable and accepted architecture strategy for a project is absolutely critical to your success, particularly in the complex situations which agile teams find themselves in at scale.
Scaling issues include team size, regulatory compliance, distributed teams, technical complexity, and so on see The Software Development Context Framework SDCF for details.
An effective approach to architecture enables you to address these scaling issues.
During " iteration 0 ", the Inception phase in Disciplined Agile Delivery DADyou need to get your project organized and going in the right direction. Part of that effort is the initial requirements envisioning and architecture envisioning so that you are able to answer critical questions about the scope, cost, schedule, and technical strategy of your project.
From an architectural point of view, during iteration 0 the goal is identify a potential technical direction for your team as well as any technical risks which you will potentially face risks which should be addressed by proving it with code.
At this point you don't need a detailed architectural spec, in fact creating such a spec at the beginning of a software development project is a very big risk. Instead, the details are identified on a just-in-time JIT basis during iterations via initial iteration modeling at the beginning of each iteration or by modeling storming throughout the iteration.
The end result is that architecture emerges over time in increments, faster at first because of the greater need to set the foundation of a project, but still evolving over time to reflect the greater understanding and knowledge of the development team.
This follows the practice Model in Small Increments and reduces the technical risk of your project - you always have a firm and proven foundation from which to work.
In other words, you want to think about the future but wait to act. The DAD framework has all of the architecture strategies described in this article built right in. In effect DAD does the "heavy lifting" with regard to process in that it captures how ideas from these various methods fit together.
Because DAD isn't prescriptive it supports several lifecycles. The idea is that your team should adopt the lifecycle that makes the most sense for the situation that you face.Data warehouse architecture research papers Cyber bullying irish essay against gay marriage essay updates sauder video essay on actors python input file argument essay global warming advantages and disadvantages essay animal farm fairy story essay negatives of social media essay intro emersonian philosophy of the oversoul essay .
Essay on OLAP, Data Marts and Warehouses, Three-Tier Architecture and ASP - WEEK 4 INDIVIDUAL PAPER OLAP, DATA MARTS AND WAREHOUSES, THREE-TIER ARCHITECTURE AND ASP DBM OLAP, Data Marts and Warehouses, Three-Tier Architecture and ASP OLAP The term OLAP stands for ‘On-Line Analytical .
Orr pointed out that “data warehouse architecture is a way of representing the overall structure of data, communication, processing and presentation that exists for end-user computing within the enterprise.
The company implementing the Data warehouse is Sears Roebuck & Co. Sears is in the retailing business selling ever thing from under garments to washing machines.
The main reason why the company is implementing the DW is because it wants to maximize the use of its information in its credit data warehouse. Free Essays. Data Warehousing. Data. Data Warehouse Architecture: with a Staging Area and Data Marts Although the architecture in Figure is quite common, you may want to customize your warehouse's architecture for different groups within your organization.
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