Friday, October 11, 2013

Week 1 Homework

IT 203 Week 1 Homework 1. A informationbase management outline (DBMS) is a software package with computer programs that control the creation, maintenance, and practice of a infobase. A DBMS provides facilities for controlling data access, enforcing data integrity, managing concurrency control, and convalescent the database after failures and restoring it from backup files, as well as maintaining database security. A analogyal database organizes data into s wipeouts of overlapping tables. 2. Business logic is the set of rules that govern an organizations processes. 3. In a thickening/server relationship, there are only twain machines in the process. The client is responsible for two processes: presentation, and petitions. The client, or end user, sends a invite for information to the server, which and so(prenominal) replies with a response. The client accordingly formats the information in a way that is useful to the user. In the three-tier relationsh ip, the client/server relationship is extended by dividing up the server tasks into two tiers, the application server and data server. The request from the client goes to the application (or logic) server, and the data request is consequently passed on to the data server. This then processes the request and passes it back to the logic server, and then onto the client. 4.
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An entity is a thing or object of importance astir(predicate) which data must be captured. Some examples might embroil employees, grazes, or books. 5. Database attributes represent characteristics or values about a database relation (also known as a table). Examples include acknowledgme! nt numbers, names, and bid numbers. 6. evince 1-9: doable TABLES --- ENTITIES| (RELATED) COLUMNS --- FIELDS| NAME| First, Last, node sell Rep| ADDRESS| Street, State, Zipcode, City| INVOICE| account number, golf-club Date| ITEMS| ItemID number, Description, Quanitity| COST| Cost per Unit, Total| Exhibit 1-10: POSSIBLE TABLES --- ENTITIES| (RELATED) COLUMNS --- FIELDS|...If you want to get a practiced essay, order it on our website: OrderCustomPaper.com

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