...Database Design Paper DBM380 March 09, 2015 Database Design Paper A database is a computer structure that organizes a collection of data so that it can be accessed, updated and managed as fast and efficiently as possible. There are several classifications of databases, “For example, databases can be classified by the number of users supported, where the data are located, the type of data stored, the intended data usage, and the degree to which the data are structured. The number of users determines whether the database is classified as single-user or multiuser. A single-user database supports only one user at a time. In other words, if user A is using the database, users B and C must wait until user A is done. A single-user database that runs on a personal computer is called a desktop database. In contrast, a multiuser database supports multiple users at the same time. When the multiuser database supports a relatively small number of users (usually fewer than 50) or a specific department within an organization, it is called a workgroup database. When the database is used by the entire organization and supports many users (more than 50, usually hundreds) across many departments, the database is known as an enterprise database” (Coronel, Morris, & Rob, 2013, p. 9). Database architecture describes the rules that dictate how data is stored in a database and how data is accessed by components of a system. Database management software, such as Oracle, is designed to handle...
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...A database management system, or DBMS, is the category of computer software programs that are used in the creation, organization, retrieval, analysis, and sorting of information in computer-based databases. A database management system is comprised of: * A modeling language, which is used to define the database structure. Commonly, database structures are hierarchical, network, relational, and object based. How they go about connecting related information is where models differentiate. The relational database model is the most widely used. * A database engine, which manages the structure of the database and optimizes data storage for a balance of quick retrieval of information and an efficient usage of space. * A database query language, that allows developers to write programs that extract data from the database, present it, and allow for the saving and storage of changes. * A transaction mechanism, which validates data before storing it while also ensuring numerous users are not allowed to corrupt the data by updating the same data at the same time “Database architecture focuses on the design, development, implementation and maintenance of computer programs that store and organize information for business, agencies and institutions”. One such example is Microsoft SQL Server. There are four system databases in each instance of Microsoft SQL Server (master, model, tempdb, and msdb) and at least one user database. Some companies have a database used by...
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...Database Design Paper Joseph Schmosef University Of Phoenix (ecampus) DBM/380 Sunday, April 01, 2012 “A database is a structured collection of records or data that is stored in a computer system. In order for a database to be truly functional, it must not only store large amounts of records well, but be accessed easily. In addition, new information and changes should also be fairly easy to input.” (tech-faq.com) To ensure usefulness over the long-term, databases should be built with high data integrity and the ability to recover data if the hardware fails. Information that has been corrupted or destroyed serves no purpose within a business structure. Being the Armed Forces is like being a field value in one giant database. Everything from the gear we are issued to how we are identified as an “individual” (ssn#) is a scannable number to be coded, referenced, and utilized by anyone with proper clearance. “The database architecture is the set of specifications, rule, and processes that dictate how data is stored in a database and how data is accessed by components of the system.” (wingenious.com) Database architecture type s can be broken down into three broad categories, each of which can have several subcategories: One Tier, Two Tier- client/server, and “N” Tier- client/server. The One Tier architecture is best suited to the single user and relatively small amounts of data. It runs on the user’s local machine and references a file that is stored on that machine’s...
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...Number ________ Student Number |__|__|__|__|__|__|__|__| Family Name This exam paper must not be removed from the venue ____________________ _____________________ First Name _____________________ School of Business EXAMINATION Semester One Mid-semester Examinations, 2015 MGTS1201 Computer-based Information Systems This paper is for St Lucia Campus students. Examination Duration: 60 minutes Reading Time: 10 minutes Exam Conditions: For Examiner Use Only Question Mark This is a School Examination This is a Closed Book Examination - specified materials permitted During reading time - write only on the rough paper provided This examination paper will NOT be released to the Library Materials Permitted In The Exam Venue: (No electronic aids are permitted e.g. laptops, phones) An unmarked Bilingual dictionary is permitted Calculators - No calculators permitted Materials To Be Supplied To Students: 1 x Multiple Choice Answer Sheet Rough Paper Instructions To Students: Please answer all multiple choice questions (MCQ) in the MCQ answer sheet provided. Please answer all short answer questions in the space provided within the examination paper. Please ensure you write your student number and name on the MCQ answer sheet and the examination paper. Page 1 of 10 Total ________ Semester One Mid-semester...
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...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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...“Petilla Dormitory” Sampaloc, Manila A Case Study in Database Design Partial Fulfillment of the Requirements in Database Lecture Bachelor of Science in Information System Submitted by: FRANCIA, Jan Diether GISALA, Aaron MORALES, Shiela May C. NOARIN, Jenny M. October 2015 Table of Contents Title page ------------------------------------------------------------------------ I I. Overview A. Company Profile ------------------------------------------------------------- 1 B. Sample Forms --------------------------------------------------------------- 2 II. Database Planning A. Mission Statement ----------------------------------------------------------- 3 B. Mission Objectives ----------------------------------------------------------- 3 C. Project Team and Responsibility Assignment ------------------------------ 4 III. Database Boundary A. System Boundary ------------------------------------------------------------ 5 B. Database User --------------------------------------------------------------- 6 C. Data Dictionary -------------------------------------------------------------- 7 IV. Requirements Collection and Analysis A. Database Normalization ---------------------------------------------------- 14 V. System Specification A. System Specification ------------------------------------------------------- 15 VI. Physical Database Design A. Physical Database Design -------------------------------------------------- 16 ...
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...The database development Process Vamsinadh Machavarapu IST 7000 Wilmington University Table Of Contents Introduction...........................................................................................3 SDLC Phases.........................................................................................3 • Requirements Analysis...................................................................4 • Database Design.............................................................................4 • Evaluation and Selection................................................................5 • Logical Database design................................................................5 • Physical Database design...............................................................6 • Implementation..............................................................................6 • Data Loading.................................................................................7 • Testing and Performance Tuning...................................................7 • Operation.......................................................................................7 • Maintenance...................................................................................8 Conclusion.............................................................................................8 References.......................................................................................
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...DIALOGUE SALESPERSON INFORMATION 5 USER REQUIREMENTS DIAGRAM 8 Forms 8 Report 13 DATABASE DESIGN 18 ARCHITECTURE DESIGN 22 CONCLUSION……………………………………………………………………………………………24 INTRODUCTION In the System Development Life Cycle (SDLC), there are four phases that need to be done to develop a system for used of by the organization. The phases are system planning and selection, system analysis, system design and implementation and operation. Since the planning and analysis phase have successfully completed, now we are continue with the next phase, which is systems design of the POS System in ARZA Coffee & Cakes. System design under System Development Life Cycle was a conversion of description of the recommended alternative solution into logical and physical specifications for the system starting from the input until the output screens consists of report, databases and computer processes. By that action the company might ease to reveals the real systems from which all the programming and system construction can be accomplish. This system could be implemented into any hardware and software since it is not tied up to any of the specific one. However, the logical design will illustrate the functions of the system in all aspects. In the physical design, the logical design will be interpret into the physical or technical specifications by convert the systems data to the structured systems design. DIALOGUE INDIVIDUAL CUSTOMER INFORMATION Figure 1 0 | Log-OnScreenSystem | 1 |...
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...Avinash Shankar Coleman University Database Integration – A framework The Physical Database Design depicts the actual structure of a set of relational tables specific to the platform and Database Management Systems (DBMS) on which the database is implemented. It is used to transition a logical data design into a physical database design that can be used to generate Data Definition Language (DDL). It also takes the current Systems environment into consideration, as well as some non-functional requirements. Basically the Physical Database Design is the implementation of the logical data design with any changes needed for physical considerations, such as capacity and performance. A physical database design is performed in three stages (LePendu, P., & Dou, D., 2011, p. 217 to 244): 1. Logical database design, which includes gathering of business requirements, developing a logical data model, and designing how to load the data 2. Conversion of the logical data design into a Physical Database Design includes table definitions, primary and foreign key relationships, and basic indexing 3. Post deployment Physical Database Design (often performed by a database administrator) includes improving performance, reducing I/O, and streamlining administration tasks. Data Integration Layer The data integration layer should be modeled in 3rd normal form or near 3rd normal form and is considered to be similar to an operational data design. In addition, the data integration layer...
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...Week One: Database Architecture | | Details | Due | Points | Objectives | 1.1 Explain database architectures. 1.2 Define database systems. 1.3 Define relational database architecture. | | | Reading | Read Ch. 1, “Database Systems,” of Database Systems: Design, Implementation, and Management. | 9/24 | | Reading | Read Ch. 2, “Data Models,” of Database Systems: Design, Implementation, and Management. | 9/24 | | Reading | Read Ch. 3, “The Relational Database Model,” of Database Systems: Design, Implementation, and Management. | 9/24 | | Reading | Reference Ch. 1, “Getting Started,” of Database Concepts as a supplemental reading. | 9/24 | | Reading | Read Ch. 1, “Introduction to Access,” of Exploring Microsoft® Office Access 2010 Comprehensive. | 9/24 | | Reading | Read this week’s Electronic Reserve Readings. | 9/24 | | Participation | Participate in class discussion. | All week | 2 | Nongraded Activities and Preparation SkillSoft® Registration | The first time you access SkillSoft®, you need to register.Do the following to register for SkillSoft®: Go to https://uopx.skillport.com Register by clicking on Register. The Register button is in the lower right corner, below the login boxes.Leave the Organization Code field blank.Use your phoenix.edu e-mail address.Use your student website login name as your user ID (the name before the @email.phoenix.edu).Click Submit. | 9/24 | ...
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... | | |College of Information Systems & Technology | | |DBM/380 Version 9 | | |Database Concepts | | |July 16, 2012 to August 13, 2012 | | |Group KM11BIT13 | Copyright © 2012, 2010, 2008, 2007, 2006, 2005, 2003 by University of Phoenix. All rights reserved. Course Description This course covers database concepts. Topics include data analysis, the principal data models with emphasis on the relational model, entity-relationship diagrams, database design, normalization, and database administration. Policies Faculty and students will be held responsible for understanding and adhering to all policies contained within the following two documents: • University policies: You must be logged into the student website to view this document. • Instructor policies: This document is posted in the Course Materials forum. University policies are subject to change. Be...
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...(Java, C++, VB, .NET, & etc)/Database Design/ Computer Networking/ System Analysis/ Project Management/Project Development/ IT & Society/ and. - NET programmers continue to struggle with the complexities of a hybrid managed/unmanaged environment. ..... Sorry, I had to laugh at that paper! ... Java on the other hand is cross-platform, and also traditionally runs as an ... - NET programmers continue to struggle with the complexities of a hybrid managed/unmanaged environment. ..... Sorry, I had to laugh at that paper! ... Java on the other hand is cross-platform, and also traditionally runsASSIGNMENT and ESSAY. ... others)Information Technology (Programming/ Languages (Java, C++, VB, .NET, & etc)/Database Design/ Computer Networking/ System Analysis/ Project Management/Project Development/ IT & Society/ and. - NET programmers continue to struggle with the complexiASSIGNMENT and ESSAY. ... others)Information Technology (Programming/ Languages (Java, C++, VB, .NET, & etc)/Database Design/ Computer Networking/ System Analysis/ Project Management/Project Development/ IT & Society/ and. - NET programmers continue to struggle with the complexities of a hybrid managed/unmanaged environment. ..... Sorry, I had to laugh at that paper! ... Java on the other hand is cross-platform, and also traditionally runs as an ... - NET programmers continue to struggle with the complexities of a hybrid managed/unmanaged environment. ..... Sorry, I had to laugh at that paper! ... Java on the other hand is...
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...Submitted by: JUNAID MUZAFFAR Roll No: 13031756-016 Vertical Partitioning Algorithm for database Design Vertical Partitioning Algorithms for Database Design SHAMKANT NAVATHE, STEFANO CERI, GIO WIEDERHOLD, AND JINGLIE DOU Stanford University This paper define the vertical partitioning in which spread or break the logical relation into group of attributes according to transaction that access the attribute are group of attribute. The vertical partition is defined in three context memory level a centralized database and the most important is distributed database like placed data in different sites. In this paper we focus on distributed database. in which local transaction should be minimize. In this paper we use two phases the first approach is that we have no first knowledge and second is cost optimization. Fragmented may be no overlapping or overlapping. Summary Partitioning in database design is the process of assign object from the logical schema to the physical several objects. Vertical partition is the process of divide attribute into group (fragments) and assign to physical object. In vertical fragmentation we make maximum and all minimum possible fragments it mean that fragment may be overlap or non-overlap. So we make cluster of fragments that one overlap or no overlap but we use the both disjoint and no disjoint cases in partitioning. We use fragmentation to improve the performance of query optimization .according to distribution point...
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...Database Design Larry Cohen DBM 380 James Cervi November 10, 2014 Database Design Database Systems A database is a structured group of data that is warehoused in a system. In order for a database to be functional it must be accessible and store large amounts of data. In order for databases to be reliable, in the event of a hardware failure, it must be easily recoverable. Also, the database must be flexible. Meaning, if there is something new that needs to be implemented, the database must be able to adapt to change. Database Architecture The database architecture is a set of parameters and processes that determine how data is stored and accessible by other individuals and databases. Database architecture focuses on the development, implementation, design, and maintenance of program. Design architecture helps develop software to better benefit the future user. There are numerous types of database that are created such as Oracle, SQL Server, and Microsoft Access. The SQL server is very important when it comes to database architects. Database architects use varies languages to create databases. Therefore, the languages are requested using the structured query language (SQL). IBM designed the SQL in 1974. It was first introduced by Oracle in 1979. SQL is very favorable among information technology specialist. Workplace Databases The database that my company uses is the Microsoft format. All salesman use Microsoft formatted handhelds to conduct orders and deliveries...
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...Data Systems Learning Team Paper Team A: HCI 520 Data Management and Design January 16, 2012 Introduction This paper will address data systems; a database is an organized group of files that are related. It is maintained and considered an integral part of most organizations worldwide. In Data Base Management, programs enable you to store, modify, and extract information from a database. In this paper team A will address database types, demonstrate a conceptual representation for a database system. We focused on relational data model to explain how DBMS organizes information in different formats and design models. Implementation of a Database System The purpose of the implementation phase is to make the new system available to a prepared set of users. In this phase the construction and installation of the new database system is initiated according to the plan and design that represents all aspects of the organization, including its interactions with the external environment, this requires matching the design requirements with the best available implementing tools and then using those tools for the implementation. There are several basic steps to implementation of a database system. Determine the need, for developing a new system; identifying user needs; developing the contextual and external and internal level schemas; translation of the internal level schema into the actual databases structures that will be implemented...
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