Each SQL data type corresponds to an ESL data type. EDS stores data in the application using three ESL data types:

EDS_STRING
EDS_INT
EDS_FLOAT

The ESL data type is specified in the EDSBindCol, EDSGetData, and EDSSetParam commands with the ETYPE argument. The driver or data source converts data as necessary when it is retrieved from or sent to the data source. For further information about data types and translation, refer to Data Types.