sharing resources between multiple IMS-DL/I subsystems. The concepts of read integrity and update integrity are important in a description of resource sharing. Read integrity means that two programs ...

A tabular file has nothing comparable to a segment. The concept of data segments is one of the things that makes a hierarchical database different from a SAS data set and other tabular files. The rows ...

The CUSTOMER table contains information about the insurance company customer. Each customer can have many policies, which are stored in the POLICY table. If there are any claims that are associated ...