One of the major advantages of databases is non-redundant data storage. This usually means that more than one user may wish to access the same data concurrently. The processing of all possible potential conflict situations is in itself a subject for a book. This book is restricted to dealing with the DB2 (SQL) facilities for dealing with problems of concurrent access and of maintaining consistency; these two concepts are related.
KeywordsTime Read Transaction Processing Concurrent Access Application Plan Logical Transaction
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