Betty Salzberg David B. Lomet ACM SIGMOD Conference 1992 21 2 351 360 958 KB Providing high concurrency in B+-trees has been studied extensively. But few efforts have been documented for combining concurrency methods with a recovery scheme that preserves well-formed trees across system crashes. We describe an approach for this tha Data, DATA STRUCTURES, Trees. Information Systems, DATABASE MANAGEMENT, Physical Design, Access methods. Information Systems, DATABASE MANAGEMENT, Systems, Concurrency. E.1 Data, DATA STRUCTURES, Trees. H.2.2 Information Systems, DATABASE MANAGEMENT, Physical Design, Access methods. H.2.4 Information Systems, DATABASE MANAGEMENT, Systems, Concurrency.