英译中Data integrity refers to the accuracy,correctness,or vali

英译中Data integrity refers to the accuracy,correctness,or validity of the data in the database.In a database system,data integrity means safeguarding the data against invalid alteration or destruction.In large on-line database system,data integrity becomes a more severe problem and two additional complications arise.The first has to do with many users accessing the database concurrently.The second complication relates to hardware,software,or human error during the course of processing and involves database transaction to keep the database in a consistent state of integrity.A database transaction is a group of database modification treated as a single unit.