ERD Explanation DBM/380 January 23‚ 2012 ERD Explanation There are several levels of normalization such as 1NF‚ 2NF‚ and 3NF. The Huffman Driver database was brought to the normalization level of 3NF by following a series of guidelines from the lowest form of normalization‚ 1NF. The first normalization form level (1NF) consists of the basic rules for an organized database. These are: • Eliminate duplicative columns from the same table. • Create separate tables for each group
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DATABASE ARCHITECTURE DATABASE CONCEPTS Figure 1.1 – Main Concepts of a DBMS Database is an organized collection of data. Database management system (DBMS) is a computer program (or more typically‚ a suite of them) designed to manage a database‚ a large set of structured data‚ and run operations on the data requested by numerous users. Data Manipulation Language (DML) is a family of syntax elements similar to a computer programming language used for inserting‚ deleting and updating
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This archive file of GBM 381 Week 4 Discussion Questions shows the solutions to the following problems: DQ 1: What is the mission of the WTO? How does the WTO function as a facilitator to global trade? What would happen in the global economy if the WTO did not exist? DQ 2: 1. What are the main UN entities that are involved in international trade? How do these entities function in promoting international trade? 2. Does everyone believe that the UN is best fulfilling its mission? Please be specific
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* ------------------------------------------------- Complete physical database design * ------------------------------------------------- Perform database query processing using SQL * ------------------------------------------------- Understand multi-user and administration issues including security‚ backup and recovery‚ concurrency‚ data warehouses‚ client/server and distributed databases‚ and internet database applications Read the Academic Dishonesty disclaimer in your syllabus
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Sometimes we have to save image‚ any type of multimedia file or text file in Oracle database from client. In web application client must upload the file in web server or any other machine. But web server can access that directory where the files are uploaded. To complete the operation we can use Oracle Blob data type‚ Oracle directory and with a procedure. Implementation: Suppose we have a table name ImageTable. The table should be like this. CREATE TABLE ImageTable ( ID NUMBER‚ FILENAME
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Week 2 Individual Database Design Paper Courtney Gardner DBM/380 05-17-2010 James Butcher Week Individual Database Design “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 practical use over a long period of‚ databases
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DBMs 2013 3/14/2013 What is DBMs or Database management system? Stands for "Database Management System." In short‚ a DBMS is a database program. Technically speaking‚ it is a software system that uses a standard method of cataloguing‚ retrieving‚ and running queries on data. The DBMS manages incoming data‚ organizes it‚ and provides ways for the data to be modified or extracted by users or other programs. Some DBMS examples‚ Microsoft Access‚ SQL Server‚ FileMaker‚ Oracle‚ RDBMS‚ dBase‚ Clipper
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Traditional File-Based Approach and Database Approach At the beginning‚ you should understand the rationale of replacing the traditional file-based system with the database system. File-based System File-based systems were an early attempt to computerize the manual filing system. File-based system is a collection of application programs that perform services for the end-users. Each program defines and manages its data. However‚ five types of problem are occurred in using the file-based approach:
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File Management A system that supports 5000 users would use Access Control Lists (ACLs) to manage the file system in Unix‚ which would be adequate‚ but an alternative protection scheme may be more efficient for the system to allow access to all but 10 users. Traditional Unix systems use file access control to prevent unauthorized access to certain files and file directories. This type of protection works well for systems supporting small numbers of users and groups. For larger numbers of users
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Database Management System (DBMS): It is a collection of interrelated data and set of programs to access the data. It contains information about a particular enterprise and also provides an environment that is both convenient and efficient to use. Database Applications: Banking: all transactions Airlines: reservations‚ schedules Universities: registration‚ grades Sales: customers‚ products‚ purchases Manufacturing: production‚ inventory‚ orders‚ supply chain Human resources: employee
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