Data access • Fixed length sequential and relative files coming from Realia COBOL are fully supported by isCOBOL. • Indexed files from Realia COBOL must be converted either to c-tree or JIsam with the following steps: a. unload file data to a raw binary file with Realia COBOL tools b. create an empty c-tree or JIsam indexed file by running a program that performs opens the file for output with isCOBOL c. load data from the raw binary file into the empty indexed file with ctutil or JUTIL.