Realtime and History Database Package 2.2

This package provides a perfect and powerful realtime and history database solution for SCADA/HMI system. It can help you to handle realtime and history data very easily. Importantly, its absolutely free, no time limit and no nag window popped.
Features of Realtime Database:
Developed by VC++, designed for high efficiency and high speed.
Large memory operation (unlimited in theory).
All variables are defined in one window.
Four types of variables support: Analog, Calculate, Logic, Pulse.
All modifications and definitions online, no reloading or restarting.
Powerful calculation expressions support.
Built-in connection with history database.
Script language support.
High flexibility and expansibility.
ActiveX component(.ocx).
Features of History Database:
Includes two parts, HistDBDesign tool and HistDBRun ActiveX component.
HistDBDesign tool is used to define the database constructure for the saved variables. You can specify any desired time intervals for writing and overwriting data.
HistDBRun component is used to write and overwrite data at run-time.
Built-in connection with realtime database.
User-defined external data source support.
Backup functionality support.
Multiple database supports: ODBC, Access, SQL Server, Oracle, MySQL(the free version only supports Access).