1 Introduction Database is any collection of data or information‚ that is specially organized for rapid search and retrieval by a computer. Databases are structured to facilitate the storage‚ retrieval‚ modification‚ and deletion of data in conjunction with various data-processing operations. A database consists of a file or a set of files. The information in these files may be broken down into records‚ each of which consists of one or more fields. Fields are the basic units of data storage
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College of Business Hospitality & Tourism Studies Department of Computer Science & Information System CIN623 Database Design & Programming Final Examination Trimester 1 – 2011 Date: Duration:3 hours plus 10 minutes INSTRUCTION TO STUDENTS 1. You are allowed ten minutes extra reading time during which you are not to write 2. Write all answers to each question in the Answer Booklet. 3. Write your Student ID number at the top of each attached sheet. 4. Insert all written foolscaps in their correct sequence
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What data is important? According to Module 5 Slides‚ DMIS stands for Database Management Information system. This system is a mechanism for entering data into data bases‚ used for accessing data from multiple databases‚ and makes all content of these databases practical. This type of system helps with decision making because it allows for the administrator to access all school information‚ examine educational trends‚ the school demographics‚ and teaching quality. For instance‚ the data could help
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Assignments Requirements 1. Look up the definition of functional dependency. Can you find a good example? In relational database theory‚ a functional dependency is a constraint between two sets of attributes in a relation from a database. Cars Suppose one is designing a system to track vehicles and the capacity of their engines. Each vehicle has a unique vehicle identification number (VIN). One would write VIN → Engine Capacity because it would be inappropriate for a vehicle’s engine to have
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DATABASE A database is an organized collection of data. The data is typically organized to model aspects of reality in a way that supports processes requiring information. (1) Often abbreviated DB‚ a database is basically a collection of information organized in such a way that a computer program can quickly select desired pieces of data. You can think of a database as an electronic filing system. Traditional databases are organized by fields‚ records‚ and files. A field is a single piece of information;
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A hypermedia database is a computer retrieval system. The database allows the user to access texts‚ video and audio recordings and photographs. Files are stored according to subject. Hypermedia Database Hypermedia database comprises a set of interconnected multimedia web pages. In this type of database‚ information is stored online and the data can be accessed by several users at a time. Hypermedia‚ an extension of the term hypertext‚ is a nonlinear medium of information which includes graphics
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NORMALIZATION OF DATABASE NORMALIZATION- is the process for evaluating and correcting table structures to minimize data redundancies‚ thereby‚ reducing the livelihood of data anomalies. The normalization process involves assigning attributes to tables based on the concept of determination. Normalization works through a series of stages called normal forms. 3 Stages of Normalization 1. 1NF or FIRST NORMALIZATION FORM 2. 2NF or SECOND NORMALIZATION FORM 3. 3NF or THIRED NORMALIZATION
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Information for Database Design 1. Scope of Project 2. Project Identification 3. Database Overview 4. Document Overview 5. 7 Steps of the SDLC/DBDSL 6. The 3 Steps in Database Creation
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Feedback on Your Choices in Volunteer Now: A Role-Playing Simulation on Database Design Name: Madisyn Olguin 1. Entity Choices Points: 9 out of 9 Your choices for the entities are listed below‚ along with correct answers: Your Choices Correct Choices Points Earned Organizations Volunteers 0 Volunteers Organizations 0 VolunteerActivities VolunteerActivities 3 Total Points 9 Well done! 2. Should activities be attributes in the Volunteers table? Points: 5 out of 5 You selected No. Good
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Running head: HUFFMAN TRUCKING Huffman Trucking: Database Design and Development Huffman Trucking started out as a single owner‚ single truck and trailer‚ operating in the Cleveland Ohio area back in 1936 doing local contract hauls. Today‚ Huffman Trucking is a National carrier with 1‚400 employees‚ 800 tractors‚ 2‚100 trailers‚ and 260 roll-on/roll-off units‚ operating from 3 logistical hubs located in Los Angeles‚ California‚ St. Louis‚ Missouri‚ and Bayonne‚ New Jersey
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