SYSTEM ANALYSIS AND DESIGNModule 1: Data and Information (3) Types of information: operational‚ tactical‚ strategic and statutory – why do we needinformation systems – management structure – requirements of information at differentlevels of management – functional allocation of management – requirements of information for various functions – qualities of information – small case study. Module 2: Systems Analysis and Design Life Cycle (3) Requirements determination – requirements specifications
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motorcycle manufacturers and distributors has faced an uphill climb in the market thus making the competitions rough between these companies. Companies in this industry can either sell new and slightly used motorcycles. They also produce innovative designs and features‚ offer repair services‚ parts‚ and accessories. No major companies dominate the industry; most have a single retail outlet. In the Philippines‚ amateur motorcycle dealers have to compete with internationally known distributors equally
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characteristics without affecting the application program’s ability to access the data. It standalone data so it doesn’t need to be link with anything. (pg. 15) 4. DBMS is a collection of programs that manages the database structure and controls access to the data stored in the database. It helps manage the cabinet’s contents (pg. 7) 5. Structural independence is when it is possible to make changes in the file structure without affecting the application program’s ability to access the data. (pg
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attribute‚ relationship‚ degree‚ cardinality‚ and associative entity. ■ Ask the right kinds of questions to determine data requirements for an information system. ■ Draw an entity-relationship (E-R) diagram to represent common business situations. ■ Explain the role of conceptual data modeling in the overall analysis and design of an information system. ■ Distinguish between unary‚ binary and ternary relationships‚ and give an example of each. ■ Distinguish between a relationship and an associative
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RELATIONAL ALGEBRA Query Language It is a Language in which a user request information from the database. These languages are typically of a level higher than that of the standard programming language. It is divided into either procedural or non-procedural language. In the procedural Language‚ the user instructs the system to perform the sequence of operation on the database to compute a desired result. In a non-procedural Language‚ the user describes the information desired without
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DATABASE: A database is an organized collection of data. The data is typically organized to model relevant aspects of reality (for example‚ the availability of rooms in hotels)‚ in a way that supports processes requiring this information (for example‚ finding a hotel with vacancies). A general-purpose database management system (DBMS) is a software system designed to allow the definition‚ creation‚ querying‚ update‚ and administration of databases. Well-known DBMSs include MySQL‚ PostgreSQL‚ SQLite
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maintenance space dock. Every maintenance activity is recorded. Activities include changing of plutonium energy pack‚ change of radar guidance system‚ and any replacement of parts. All history of maintenances is kept as accurate maintenance records. Propose a database system for NEXUS based on the scenario given. SCENARIO 2 Propose a database system for a travel agency. In this travel agency‚ there are three types of employees: Counter staff‚ Executive and Managers. An executive and a Counter
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EE4791 Database Systems 2012-13 Project (CA‚ 20%) Design and Implementation of the Database with Microsoft Access. Group assignment (1-3 persons per group): 1. Propose a database Case Study with at least 5 tables. Write down the requirements on the database. 2. Draw EER diagram. 3. Give relational model (i.e.‚ logical scheme). Normalize up to 3NF. 4. Create the tables in MS Access in Design View. Choose indexes for your query. Implement data integrity (default value‚ range values‚ etc) 5. Implement
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command? Selected Answer: SELECT HireDate‚ COUNT(*) FROM EMPLOYEE WHERE Salary < 30000; Question 9 5 of 5 points Because SQL stored procedures allow and encourage code sharing among developers‚ stored procedures give database application developers the advantages of less work‚ standardized processing‚ and specialization among developers. Selected Answer: True Question 10 5 of 5 points The SQL command used to create a virtual table is ________.
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Download at www.eBook12.Com Download at www.eBook12.Com This page intentionally left blank Download at www.eBook12.Com Introduction to Database Management Mark L. Gillenson‚ Paulraj Ponniah‚ Alex Kriegel‚ Boris M. Trukhnov‚ Allen G. Taylor‚ and Gavin Powell with Frank Miller Download at www.eBook12.Com Credits PUBLISHER Anne Smith ACQUISITIONS EDITOR Lois Ann Freier MARKETING MANAGER Jennifer Slomack SENIOR EDITORIAL ASSISTANT Tiara Kelly PRODUCTION MANAGER Kelly Tavares PRODUCTION
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