...Logical Design and Physical Design CMGT 555/ Systems Analysis and Development Throughout the whole process of system development, there are designs that take place before any coding or setup takes place. During this time, phrases like logical design and physical design get tossed around a lot, but what are they and what do they mean? In short, the logical design defines what must take place, not how it is accomplished. The logical design is like a set of blue prints, it describes the actual processes of entering, verifying, and storing data. In this paper we will explain when logical designs and physical designs are used, what design information a logical design and physical design contain and any similarities or differences. Figure 1. Example of Logical Model and Physical Model for an ERD Relationship Diagram (Compare Logical and Physical ERD, 2009) The direct definition of a logical design “is the Conceptual Blueprint of a software application, illustrating entities, relationships, rules, and processes (Thibeault, 2011)”. So what is the logical design is used for? The logical design contains all the business entries, what each entries attributes are, and relationships among entries. Now the logical design to some is misleading because they often confuse it with detailed technical design, even though the goals for these two are not similar at all. Now when do we use the logical design? That question is simpler to answer; it usually starts during the requirements...
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...Physical Design and Implementation Strayer University Physical Design and Implementation SQL Injection is one of the many web attack mechanisms used by hackers to steal data from organizations. It is perhaps one of the most common application layer attack techniques used today. It is the type of attack that takes advantage of improper coding of your web applications that allows hacker to inject SQL commands into say a login form to allow them to gain access to the data held within your database. In essence, SQL Injection arises because the fields available for user input allow SQL statements to pass through and query the database directly. SQL Injection is the hacking technique which attempts to pass SQL commands (statements) through a web application for execution by the backend database. If not sanitized properly, web applications may result in SQL Injection attacks that allow hackers to view information from the database and/or even wipe it out. Oracle database privileges are of two types, system privileges and object privileges. The system privileges grant users power to perform the specified actions system-wide, whereas the object privileges let users perform particular actions on specified database objects. Microsoft SQL Server allows individual users to create private objects in the database. The system records the owner of every user object. Users can access objects only if the owner of the object has granted them access. Administrators can define...
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...After a brief research of the latest versions of the following database management systems (DBMSs) on the market: Oracle 11G, Microsoft SQL Server, MySQL, and IBM DB2. I found the following information about each DBMS’s. Oracle 11G The biggest advantage Oracle 11G has is that it can help you create customized database applications. Instead of getting a standardized database program out of the box, you get a program that can be customized to fit your needs. This makes it possible to create a database that only has the features you need. Another advantage is Data Mining. It makes it possible to find relationships in data that would otherwise be difficult to find on your own. As good as the above sounds it also comes with a couple of BIG disadvantages. The biggest would be the cost, if you plan on using the program on multiple computers, you will need to buy licenses for each computer. If you plan on making the software available on many computers, these costs can really add up. Another big disadvantage is it comes with a learning curve; this is not something that you can pick up in a short period of time. Microsoft SQL Server MS SQL Server is a Client-server relational database system, with no UI development tools built in. Some of it advantages are, Maintenance its has lots of tools for maintenance, can do most of it with users in DB. It is user friendly, great security, it minimizes redundancy, and it is very consistent. It also works great on an enterprise scale it is designed...
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...|Just build it! | |Arguments to support the practice of building models early in the service design process | | | |Author | |Meggie A. Williams, De Haagse Hogeschool | | | |Contact | |M.A.Williams@hhs.nl | | | |Research Group | |Philosophy in Professional Practice ...
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...www.elsevier.com/locate/apthermeng An axiomatic design approach in development of nanofluid coolants In Cheol Bang a,*, Gyunyoung Heo b b a Energy Sciences, Global Edge Institute, Tokyo Institute of Technology, 2-12-1-S6-13 O-okayama, Meguro-ku, Tokyo 152-8550, Japan Department of Nuclear Engineering, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyunggi-do 446-701, Republic of Korea Received 4 September 2007; accepted 4 February 2008 Available online 12 February 2008 Abstract The experimental data for nanofluids in thermal-fluid systems have shown that the new fluids promise to become advanced heat transfer fluids in terms of thermal performance. While enhancing thermal characteristics, the solid–liquid mixtures present an unavoidable disadvantage in terms of pumping cost for economic operation of thermal-fluid systems. In addition, there is a lack of agreement between experimental data provided in the literature. The present work found that there would be no comprehensible design strategy in developing nanofluids. In this work, the Axiomatic Design (AD) theory is applied to systemize the design of nanofluids in order to bring its practical use forward. According to the Independence Axiom of the AD theory, the excessive couplings between the functional requirements and the parameters of a nanofluid system prevent from meeting the functional goals of the entire system. At a parametric level, the design of a nanofluid system is inherently coupled due to...
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...Design for Elderly Friendly Nurul Hidayah Ahmad Alemi SYS 705 Advanced Interaction Design Universiti Teknologi MARA nurul0903@yahoo.com Abstract—A number of senior citizen population or elderly people increased every year. There are many difficulties and weaknesses involve as we get older such as cognitive disabilities, memory decline, poor vision, thus the assistive technology nowadays should follows some design specification that suitable for an elderly to satisfy and simplify their everyday life needs. Hence, this paper attempts to discuss about the issues, concept, applications and design for elderly friendly in details. Keywords—Elderly: Assistive Technology: Design for Elderly. II. ISSUES In the past few years, people assume elderly pathetic, poor and unfortunate also useless. They have been national development and nation. On the other hand, designer should follow some design guidelines on how to design the assistive technology or application that suitable for the elderly depending on their type of impairment or disabilities. considered not so important in the community. Nowadays, community realize that the elderly should involve or participate in the social and community activities as they had a lot of knowledge, experience and I. INTRODUCTION Elderly is defined as aged 60 years and above. The number of older people is rapidly increasing in Malaysia and also in developing countries [1],[2]. The rapid wisdom that can be shared to give some ideas in the requirement...
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...Theory of Architecture 2: Manuals Architectural Design Process and Methodologies The question of the actual design process and methodology of design is more confusing when dealing with architectural design because architectural design more often involves in a team work. Before, most architects are considered more of an artist; they can design but was not able to explain or defends the need to add a significant amount of funds for the particular design. In today’s architectural trends, there are set of rules and guidelines to be followed that could affect or help in making a design. The process should involve the following step. [TSSF Inc.] 1. Assemble the team – As stated above the architectural design involves a team of people. At the outset of the project there should be a scheduling or at least a tentative assembly of efficient architects and consultant who identify the project’s scope and purpose. There should be a project’s team leader who holds the overall responsibility and identifying the right person/s in their fields. 2. Clear Communication – As again stated before, the design part involves a team. The communication should be always available for any enquiry of the different involves, especially for the owner or their representative/s. The Project Architect coordinates regular meetings to design staff, specialists and the Owner’s representative. 3. Budget and Cost Control - Cost control is critical to the success of any project. This is true...
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...2. Match the terms in the first coumn with the defi-nitions or examples in the second column . 1. Information Engineering. | A. Information Engineering. (6) | 2. JAD. | B. Structured design module properties. (7) | 3. Modern Stuctures Design . | C. Participative development emphasis. ( 2 ) | 4. Prototuing | D. IBM's Rational (11) | 5. System Design | E. Derived model from structures design (13) | 6. Physical Entity Relationship | F. Combined data and process. (12) | 7. Coupling and cohesion . | G. Model driven data centered , process-sensitive technique ( 1 ) | 8. RAD. | H. Pictorial system models emphasis. (9) | 9. Model driven Design | I. Functional incomplete model built using RAD (4) | 10. Code , implement , and repair . | J. Process decomposition technique (3) | 11. Repository based CASE tool | K. Computer based solution specification tasks (5) | 12. OOD | L. Merger of JAD , prototyping and structured techniques. (8) | 13. Structure chart | M. Potential prototuping pitfall (10) | 8. Coplete the following sentences : A critical part of designing the application architecture is deciding how to distribute the system’s data, processes and interfaces to different business locations . Databases are a resource typically shared by many programs and they may be used by future programs not yet known for purposes not originally intended. In designing user interfaces...
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...Style: APA Number of References: at least 2 CSG1105 Assignment 2 – Network Implementation Background Widgets and Gadgets (WaG) have recently acquired a business, We Make Stuff (WMS), in another city. Before work can commence on integrating WMS's network into WaG's, WMS actually need to have a network. WMS consists of three close buildings, each with multiple floors. Each floor is dedicated to a business function as defined in this network design topology. Task Details You have been given the final design approved by the tender process and hired to implement that design. In this submission you should take the design given and implement it in Packet Tracer. Where there is ambiguity, you are encouraged to use your best judgement. The design includes several VLANs, a Routing Layer 3 switch and 2 routers to external networks. There is a Wirelss VLAN that all wireless access points and the VPN server connect to. Remember, this is an implementation. Transferring logical concepts into practical application needs to be displayed, physical implementation of logical processes such as subnetting are important. You have been given the Network range of 10.0.0.0/21 to work with. Good luck Network Warrior! Marks Worth 25% of the total marks of the unit Due Date Week 11 (exact date listed on Blackboard) Submission Instructions Submit the Packet Tracer file only through Blackboard. Include an MD5 hash in the comments section; this is for your benefit if there are problems with...
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...to the SDLC: (1) planning and selection, (2) analysis, (3) design, and (4) implementation and operation. The first phase in the SDLC is when the organization’s total information system needs are analyzed and arranged. The result of this phase is a potential information systems project is identified. The systems analyst prioritizes and translates the needs of Hoosier Burger and translates the needs into a written plan. The fact of the matter is that Hoosier Burger is processing business by a method of paper-based system, suggesting a valid argument for continuing with the SDLC approach. Systems analysis, the second phase, is when the analyst will thoroughly study the organization’s current procedures to perform the tasks. The analyst must work with users to determine what the users want from the proposed system. For Hoosier Burger, the tasks are inventory control, customer ordering, and management reporting. The systems analysis phase of SDLC is when an alternative replacement system is proposed. Phase three is systems design. This is when the analyst converts the description of the recommended alternative solution into a logical and then physical system specification. According to Valacich (2009), phase three is when “…you must design all aspects of the system from input and output screens to reports, databases, and computer processes…” (Valacich 18). The final product of the design phase is the physical system...
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...may not like. Customer may like usages of e-commerce; such as • Faster buying/selling procedure, as well as easy to find products. • Buying/selling 24/7. • More reach to customers, there is no theoretical geographic limitations. • Customers can easily select products from different providers without moving around physically. On the other hand customer may dislike usages of e-commerce, such as • It take long time for product delivery • No option for choosing right size of shoes • Low return ability than physical stores • Product uncertainty There are some external factors such as customer demand, competitive adjustment, competitive pressure, cost of IT equipment, Government policies which influence the implementation of e-commerce in Bata. • Customer demand has inflation on the implementation of e-commerce. The people who are living cities are not capable to get all the designs of latest Bata shoes. So by implementing e-commerce they can see all the designs in online catalogs & can order via online store because now a day’s internet is moderately available in all the big cities • Basically Bata have competitive advantage which is customer priority, they are the market leader in shoe industry. So basically they don’t need to make any competitive adjustment • For using E-Commerce Bata needs it equipments & expert peoples to run this...
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...factors in engineering design theory: a post-positivist approach Terence Love Department of Mechanical and Materials Engineering University of Western Australia Social, environmental and ethical factors in engineering design theory: a post-positivist approach Terence Love B.A. (Hons) Engineering This thesis is presented for the degree of Doctor of Philosophy of The University of Western Australia. Department of Mechanical and Materials Engineering 1998 Abstract This research investigated how social, environmental and ethical factors can be better included in theories of engineering design. The research focused on designing as an essentially human activity via consideration of the epistemological and ontological issues involved in constructing coherent design theory. The research investigations led to a clearer understanding of the roles of ontology, epistemology and methodology in design research and this clarification enabled the construction of a post-positivist approach to engineering design theory that better includes social, environmental and ethical factors alongside the existing products of scientific engineering design research. Other contributions to knowledge that emerged from the research process and which underpin the conclusions include; clarification of the terminology and basic concepts of design research and engineering design research, historical...
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...OPERATIONAL EFFECTIVENESS MULTI-CRITERIA ANALYSIS OF THE ARTICLE AT THE DESIGN STAGES Annotation. The multicriterion rapid assessment method of techno-economic parameters of new articles is developed. It avoids expensive engineering changes during the operational phases through the analysis of external and internal factors at an early stage in the design that affect the maintainability and manufacturability of the article. The expert selection of the initial multitude of indicators from the five enlarged criteria groups and their subsequent pair-wise comparison point to the complex criteria for compliance with the average and optimum values of operational effectiveness of the article design. Comparison provides an opportunity to decide on...
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...The optimum design selection for this project is design 03. This design was selected by considering several factors. The first factor which was considered is the complexity of the circuit design. As there are two processors the work load is divided and therefore error percentage can is reduced. Sensor interfacing is carried out with the microcontroller and the GSM and PC interfacing is done using the arduino. If an error occur in the system it will be easily troubleshoot as the system is virtually divided and three different program codes are being used. When comparing with the other two designs the work load will more on the processor therefore it will affect the accuracy and the effectiveness of those system in the long run. In data transmission design 01 has used a RF for wireless communication, and the design 02 has used a Bluetooth device for its wireless data communication. As the system is wireless there will be various interferences from other equipment, result in errors in the system. And if this system is implemented in a small nursing home or a hospital, the radio frequency signals may be interfere with other medical equipment which will cause instability in this system as well as other equipment too....
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...uniqueness, a popular phone that satisfies consumer with their physical and service attributes. -advanced camera phone -bigger screen -designed specifically for human touch b) affordable price range from different model for diff type of user c) response well to the market and are able to compete with the competitors in term of product 5) In order for Proton to deliver high quality cars , Proton would need two strategies, quality management and location strategy. I. quality management. Designing the product with more safety measure by using parts of a higher quality than the average come maker. II. Location strategy. Location should be located far enough from the city, and within the radius III. strategic location, which compliment both the factor for delivering goods and therefore cutting the cost of logistic. Hence after, the costs saved can be allocated to other department therein improving the quality. For example, with increased fund available, the R&D department could provide more advanced technology. 6) 8) 9) Describe the concept of Modular Design and Robust Design. Modular design is about production design, a design that separates a product into smaller part that can be created by any whom or company, which gives flexibility to a product as a whole. for example, automobile is subdivided into different smaller parts, such as muffler, engines, head light and etc. Robust Design is a product designed to a certain specification that can be...
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