The initialization of the chosen database type is achieved by calling
sql:initialize-database-type
with
:database-type
:odbc
or
:database-type
:oracle8
. In an application, this step should be done at runtime. Where multiple database types are supported, it is possible to initialize more than one database type if needed.
The following functions and variables are relevant to initialization:
*default-database-type*
specifies the default type of database. Currently supported values are
:oracle8
on Unix/Linux, and
:odbc
on all platforms.
The function
initialize-database-type
initializes a database type according to the value of its
database-type
argument, which defaults to the value of
*default-database-type*
.
A sample code sequence for initializing Common SQL to work with an ODBC database, using the above functions and variables, is as follows:
(require "odbc")
(setf sql:*default-database-type* :odbc)
(sql:initialize-database-type)
You can find which database types have been initialized by the value of the variable
*initialized-database-types*
.