PostgreSQL Data Access Components (PgDAC) is a library of components that provides direct access to PostgreSQL database servers from Delphi, Delphi for .NET, and C++Builder. PgDAC is designed to help programmers develop really lightweight, faster and cleaner PostgreSQL database applications without deploying any additional libraries.
PgDAC works directly through TCP/IP protocol and does not use the PostgreSQL client library. As data is transferred from socket to storage without additional buffers, the PgDAC performance is kept on the highest level. Such technology helps to avoid restrictions and slips of the pqlib library, use features of PostgreSQL backend protocol that are not implemented in it. Also Devart PgDAC offers wide coverage of the PostgreSQL feature set and emphasizes optimized data access strategies.
Key Features:
Direct access to server data without using client library. Does not require installation of other data provider layers (such as BDE and ODBC)
Full support of the latest versions of PostgreSQL Server
Support for all PostgreSQL Server data types
Disconnected Model with automatic connection control for working with data offline
Local Failover for detecting connection loss and implicitly reexecuting certain operations
All types of local sorting and filtering, including by calculated and lookup fields
Automatic data updating with TPgQuery, TPgTable, and TPgStoredProc components
Unicode and national charset support
Supports many PostgreSQL-specific features, such as notifications, notices, and sequences
Advanced script execution functionality with the TPgScript component
Support for using macros in SQL
Lets you use Professional Edition of Delphi and C++Builder to develop client/server applications
Includes annual PgDAC Subscription with Priority Support
Compatibility: Embarcadero RAD Studio 2010, Delphi 6 and higher (except Delphi 8),C++Builder 6 and higher, FreePascal, Turbo Delphi; PostgreSQL server versions since 7.1 up to 8.3.

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