
 data structure 
  external memory data structure, passive data structure, active data structure, persistent data structure, recursive data structure. 
  Note: Most data structures have associated algorithms to perform operations, such as search, insert, or balance, that maintain the properties of the data structure. 
  Paul E. Black, "data structure", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed., U.S. National Institute of Standards and Technology. 
 www.nist.gov /dads/HTML/datastructur.html (150 words) 
