direct access method in a sentence

1. The RRDS organization was designed to replace BDAM, the Basic Direct Access Method.
2. Developers can use these direct access methods to design the data and index structures that closely parallel the needs of their application.
3. The data was stored in " basic direct access method " ( BDAM ) files, which caused upgrade and portability problems later in its life-cycle.
4. It's difficult to find direct access method in a sentence.