By Thomas Connolly, Carolyn Begg, Richard Holowczak
Business Database platforms arms you with the data to examine, layout and enforce potent, strong and profitable databases. This booklet is perfect for college kids of Business/Management info platforms, or desktop technological know-how, who might be anticipated to take a direction in database platforms for his or her measure programme. it's also excellently suited for any practitioner who must research, or refresh their wisdom of, the necessities of database administration platforms.
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Renting a DVD When you wish to rent a DVD from a DVD rental company, you will probably find that the company maintains a database consisting of the DVD titles that it stocks, details on the copies it has for each title, which copies are available for rent and which copies are currently on loan, details of its members (the renters) and which DVDs they are currently renting and date they are to be returned. The company can use this information to monitor stock usage and predict buying trends based on historic rental data.
Alternatively, we may have an index that helps locate what we want more quickly. For example, we may have divisions in the filing system or separate folders for different types of item that are in some way logically related. The manual filing system is a perfectly satisfactory solution while the number of items remains small. It even works quite adequately when there are large numbers of items and we have only to store and retrieve them. However, the manual filing system breaks down when we have to cross-reference or process the information in the files.
N The meaning of the term Database Management System (DBMS). n The major components of the DBMS environment. n The differences between the two-tier and three-tier client–server architecture. n The three generations of DBMSs (network/hierarchical, relational, and objectoriented/object-relational). n The different types of schema that a DBMS supports. n The difference between logical and physical data independence. n The typical functions and services a DBMS should provide. n The advantages and disadvantages of DBMSs.