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上传时间: 2006-02-23
详细说明： ZeosDBO is a database middleware components for Borland development tools, including Delphi, C++ Builder and Kylix. The following compilers are supported: Delphi 5 - 7C++ Builder 5 - 6Kylix 2 - 3ZeosDBO supports direct connectivity to the following databases using the vendor provided, native interface: MySQL 3.20 - 4.1PostgreSQL 6.5 - 7.4Firebird 1.0 - 1.5Interbase 5.0 - 7.5Microsoft SQL Server 7, 2000Sybase ASE 12.0, 12.5Oracle 9iSQLite 2.8For other databases we propose to use implemented Active Data Objects (ADO) Bridge. Advan tages of using ZeosDBO: Platform independance. The ZeosDBO is highly generic. Applications written in ZeosDBO can be migrated across databases without major changes. ZeosDBO is open source, written for usability and extensibility. ZeosDBO leverages the amazing power of the Delphi development environment without relying on a performance killing middleware. ZeosDBO is an extremely thin abstraction layer, unlike ‘thick‘ layered protocols like ADO and BDE. Package contents: ZCore - Core classes and interfaces. Contains Java style objects and collections as well as compatibility types and functions. ZParseSql - SQL specific for syntax and lexical analysis. ZPlain - Native plain API to supported SQL servers. ZDbc - Port of Java Database Connectivity API (JDBC 2.0). DBC API acts as intermediate layer between Plain API and highlevel TDataset or DBExpress components. ZComponent - visual components descended from TDataset. Installed components: TZConnection: This component encapsulates the database connection and transaction management. TZReadOnlyQuery: TDataset component to execute SQL queries and process data in read-only mode. TZQuery: TDataset component which allows data modifications in regular and cached mode. TZUpdateSQL: Analog of standard TUpdateSQL component to explicite definition of Insert/Update/Delete SQL statements for TDataset modifications. TZStoredProc: The component to execute SQL stored procedures. TZSQLProcessor: The component to execute SQL scripts for different SQL and various delimiter types. TZSQLMonitor: The component to monitor all outgoing SQL queries and other logging information. TZSQLMetadata: Specialized TDataset component which provides an access to database metadata such as tables, columns, indices, etc. ...展开收缩
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