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Pc Science

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Submitted By LisaRena
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Databases Databases are electronic filing systems that consist of objects (Microsoft, para 2.) providing a quicker means to data retrieval than traditional paper and pen models. They have more flexibility than standard spreadsheets and offer the ability to run query searches. A properly designed database can retrieve items in complex searches; a task that might take hours or days manually, in a matter of minutes. Databases are designed to store large amounts of information without redundancy or inconsistencies (Microsoft, para 1.) Database information can be used to generate reports for specific topics, create mailing lists, manage data, share data with other programs, and perform calculations of data. Databases also can provide an area of storage for document retrieval, such as a school digital library. At work we use a complex data system known as an AS/400 system that can store and retrieve data. Database Architecture According to Georgetown University (n.d.,) database architecture is “the collective application and database instances that comprise the complete system.” This means that defined rules and specifications determine how data is stored and accessed. Web-based database architecture can use two-tier architecture or three-tier architecture depending on if the DBMS and Web server are both on the same computer (Kroenke, p. 452.) As a three-tier database architecture system the AS/400 is used to keep track of inventory, run reports, provide information about manufacturers and instructions of what to do with defective merchandise, populate lists of current products; where they are located, their full descriptions, and whether they are promotional items, clearance items, discontinued, or active. As a company-wide system it also can be used to research others stores inventory information. The AS/400 is an integrated system that is adaptable and

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