What is the ABAP concept of logical databases used for?

• A. To create physical indexes
• B. To read data from database tables and associate them with executable ABAP programs while defining the program contents
• C. To hash keys to obtain an address
• D. To optimize queries

Answer: (B)

Logical databases provide a uniform, hierarchical view of related data that ABAP programs can use to read data from multiple tables in a single, predefined structure. They define how tables are related, which fields are available, and how data is navigated, so the ABAP program can access and present the data without writing complex joins for every report. The program is bound to the logical database, and the LDB defines what data the program contents will work with and how it should be fetched, including navigation paths and access controls.

This approach centralizes data retrieval logic in the metadata layer, streamlining the development of reports that pull together related tables. It is not about creating physical indexes, hashing keys, or optimizing queries; those are handled by database design, data structures, and query optimization outside the logical database mechanism.