data dictionaries
Extended file descriptors that map your application's SQL commands to COBOL records and vice versa. Based on the standard COBOL file descriptors (FDs).
data source name
DSN. An arbitrary name for every group of Vision or relative data files that your Windows application needs to access.
directives
Optional comments that you can place into an FD in your COBOL source code to control how the data dictionary is built.
master DSN
The data source name assigned to a group of multi-company files. Used with the Multi-Company option.
ODBC driver manager
Typically provided by Microsoft. Its function is to receive calls from the Windows application, establish which data source driver is being used, call the driver (in this case, the Vision driver, AcuODBC), and load it into memory if it is not already there.
ODBC driver for ACUCOBOL-GT data
Provided by Acucorp, Inc. The function of the ODBC driver for ACUCOBOL-GT data is to receive SQL commands from the ODBC driver manager, and translate them from SQL to Vision or relative file I/O using Acucorp's data dictionary files.
Open Database Connectivity
ODBC. A library of standardized data access functions that gives programmers a way to access and manipulate data in a variety of data sources.
SQL
Structured Query Language. According to specification, the language by which ODBC programs retrieve data.