By Stephen R. Westman
Database-backed web content supply many benefits for libraries: clients get actual and up to date info in genuine time, and location upkeep and information publishing are a lot more uncomplicated. As attractive an idea as database-backed pages are, the “how-tos” of making them stay a secret to many librarians.This hands-on source offers the instruments to enhance clients’ effects through delivering present information, make website upkeep and knowledge publishing a lot more uncomplicated, or even upload new usefulness to present facts. Following those transparent, step by step motives, readers will locate confirmed suggestions for solutions to questions like: * What are database-backed websites? * How a lot technical knowledge is required to do that? * whilst, and for what forms of info, are database-backed web content applicable? * What are Open resource instruments? * Who can use Open resource software program? * Why is it applicable for libraries?The ebook includes:# pattern software code and databases# A programming setting, together with a functionality library to facilitate the programming of often-needed projects# hyperlinks to info on establishing your individual database-backedwebsite, together with particular directions on easy methods to arrange the book's programming surroundings# instance varieties, records, and programming criteria for designing your individual siteThe booklet specializes in MySQL but in addition bargains info on PostgreSQL, together with complete help for it within the functionality library.This authoritative, money-saving advisor takes readers via a whole undertaking from thought to implementation. It serves either newbie and specialist librarians concerned with designing and retaining web pages, in addition to IT managers and directors looking professional information on undefined, software program, and programming and documentation techniques. choked with professional recommendation and hyperlinks to genuine instruments, this strong, hands-on reference will streamline site owners’ effects and consumers’ searches.
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Additional resources for Creating Database-Backed Library Web Pages: Using Open Source Tools
D ATA B A S E B A S I C S 39 PostgreSQL. Essentially a third-generation Berkeley database management system (ancestors include Ingres and Illustra, the second was merged into Informix), PostgreSQL is the most feature-filled open source RDBMS system currently available (although MySQL is quickly catching up). Users include Reuters, MIT’s DSpace project, Utah State University, and the Biblioteca Civica Pablo Neruda di Grugliasco online library system. Firebird. 0 product, this system is now being managed by a separate group.
D ATA B A S E B A S I C S 33 Figure 2-8 The basic syntax for a multiple-table search is SELECT
Having broken down our information into separate tables, we need to find a way to bring them together as needed. We do this by creating links (relations) between the records that in turn link the various tables. Tables are linked through what are called primary/foreign key pairs—a pair of fields, one in each table, that share a common value. We set relations—as in the example above— by taking a unique value (primary key) from a field in one entity and placing it 22 D ATA B A S E B A S I C S in a corresponding field in another record in another table (foreign key) so that a link is established between the two records.