Thank you for your interest in Direct Access Components for EnterpriseDB (EnterpriseDBDAC)!
EnterpriseDBDAC: "What?" and "Why?"
EnterpriseDBDAC is a member of microOLAP Direct Access Components line of products.
Our DAC products allow to create Borland Delphi/C++Builder applications with the direct access
to SQL servers without BDE and ODBC.
All these products were developed according to the following requirements:
1. Avoid the weaknesses of BDE/ODBC technology:
You add to your distributive more than 5Mb with BDE;
If another BDE-based program will be installed on user's workstation it can conflict with your
ODBC profile on user's workstation can be changed or damaged;
Possible ODBC drivers conflicts.
BDE uses another layer of middleware (ODBC). So, in this case you have two resource eaters: BDE
Several of the SQL Links drivers provided with Delphi Enterprise Edition do not work with BLOB
data types correctly;
BDE cannot access some RDBMS data types at all;
Only the Enterprise Edition of Delphi (~$3000) includes the BDE SQL Links required for
connecting to DB servers.
DAC: Ability to work with Professional Edition.
2. Keep migration of old BDE/ODBC based projects to DAC easy:
No additional knowledge required:
Each DAC components set must be TDataSet compatible. Implementing of additional RDBMS-specific
functions and properties must be obvious;
Freely distributed native API from RDBMS vendor only required.