Field help (ADSBLBLNG) 

This field determines the maximum size taken by default in the blob files (binary large objects) stored in the database. These fields correspond notably to the images stored in the database.

This field is defined as having the power 2 : 1 equivalent to 2 Kb, 2 to 4 Kb, 3 to 8 Kb and so on (the corresponding value is displayed up to 20, which corresponds to 1Gb).

It should be noted that each field of the type blob can be sized differently in the database (if the database type carries an explicit length, this default length is not used).