Autodesk AUTOCAD 2006 Command Reference Manual page 319

AutoCAD 2000 and later. Similar mappings must be established between all
old ASE link values and the new values that you want substituted for them.
Link Format
Specifies the format of the link that you are converting. Different fields are
displayed depending on whether you select R12 or R13/R14.
Catalog
Specifies the catalog used by the link that you're converting.
Catalog
Lists available catalogs that you can select for the converted link.
Data Source
Lists available data sources that you can select for the converted link.
Database
Specifies the database used by the link that you're converting.
DBMS
Specifies the database management system used by the link that you're
converting.
Environment
Specifies the environment used by the link that you're converting.
Link Path Name
Specifies the link path name used by the link that you're converting.
Link Template
Lists available link templates that you can select for the converted link.
R12
Specifies settings for converting R12 links.
R13/R14
Specifies settings for converting R13 and R14 links.
Schema
Specifies the schema used by the link that you're converting.
Link Conversion Dialog Box | 295