Complex sentence: Although their usage may not be specifically declared as "shadow table (s)", the concept remains the same shadow tables are usually used in order to improve the performance, capacity, and ability of an existing computer/network system.
Split into simpler sentences: Although their usage may not be specifically declared as "shadow table (s)", the concept remains the same. Shadow tables are usually used in order to improve the performance, capacity, and ability of an existing computer/network system.