what are the similarities between internal tables and
structures?

Answer Posted / bandivenkateswarlu

The diffeneces between the internal table and sturctres are
given below.

Internal tables: are tempareroy tables for the database
tables are using created at the runtime of the system. It
will allocate the memory of the system . but where as in the
sturctures are created in within in the progrm. it dont
allocate the space in the memory . But in internal tables
are created the runtime of the system.

The default internal table size is 8KB.

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