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Appaserver is an open-source, application server used to create multi-user, database applications. It runs on UNIX-flavored operating systems, connecting MySQL to a browser. ''Appaserver's'' paradigm is to build database applications without painting or programming the user interface. Instead, applications are assembled from database components — tables, columns, relations, and roles. Web forms are created dynamically, allowing select, insert, update, and delete operations on each table. Also: * Top/bottom, one-to-many screens are automatically produced. * Query screens are automatically produced. * Buttons to compute statistics on numeric fields are automatically created. * Buttons to create time charts and histograms on numeric fields are automatically created. * Relations are maintained from within. :# Primary keys can be updated. The update then cascades throughout the foreign keys across related tables. :# Rows can be deleted without creating orphans. Rows in one-to-many related tables will automatically be deleted unless the relationship is flagged to update the foreign key to null. :# Natural keys are used, not Surrogate keys. However, surrogate keys may be used as secondary keys. For example, the primary key for the customer table would likely be "Customer_Name|Address". However, the customer table might also have a customer_number column as a secondary key. Therefore, the primary key for the customer table might be "Customer_Name|Customer_Number". Security is obtained by grouping users into roles. Table-level access — select, insert, update, and delete — is then granted to each role. Security can be refined by restricting row-level and column-level access. Processes are executed via the Common Gateway Interface. ''Appaserver'' is available under the GNU software license. ==External links== * (Appaserver ) * (Download ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Appaserver」の詳細全文を読む スポンサード リンク
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