File extension dbt is used by following file type(s):

File extension dbt file type 1 description:
Clipper database text

Old file extension.

 

File extension dbt file type 2 description:
Database text file

DBT are storage for fulltext data. Data is stored in simple 512 byte blocks. If data is > 510 byte it will be stored in continuous blocks. Only reference to the data is an pointer stored in the memo field in the datafile. The pointer is not displayed in dBASE. If the pointer in a data file record is not empty dBASE will open a file with same name as the data file but with the extention .dbt.

Related programs
that open dbt files:
dBASE